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a3d9af584c
This filter allows developers to modify the data that is used to create tag clouds, without having to manipulate the tag cloud markup directly. As part of the refactor, this changeset also adds a few unit tests for the way `wp_generate_tag_cloud()` generates the 'title' attribute, as well as improvements to output escaping. Props flixos90, ysalame. Fixes #24656. Built from https://develop.svn.wordpress.org/trunk@32996 git-svn-id: http://core.svn.wordpress.org/trunk@32967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1512 lines
48 KiB
PHP
1512 lines
48 KiB
PHP
<?php
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/**
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* Category Template Tags and API.
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*
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* @package WordPress
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* @subpackage Template
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*/
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/**
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* Retrieve category link URL.
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*
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* @since 1.0.0
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* @see get_term_link()
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*
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* @param int|object $category Category ID or object.
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* @return string Link on success, empty string if category does not exist.
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*/
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function get_category_link( $category ) {
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if ( ! is_object( $category ) )
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$category = (int) $category;
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$category = get_term_link( $category, 'category' );
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if ( is_wp_error( $category ) )
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return '';
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return $category;
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}
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/**
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* Retrieve category parents with separator.
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*
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* @since 1.2.0
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*
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* @param int $id Category ID.
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* @param bool $link Optional, default is false. Whether to format with link.
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* @param string $separator Optional, default is '/'. How to separate categories.
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* @param bool $nicename Optional, default is false. Whether to use nice name for display.
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* @param array $visited Optional. Already linked to categories to prevent duplicates.
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* @return string|WP_Error A list of category parents on success, WP_Error on failure.
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*/
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function get_category_parents( $id, $link = false, $separator = '/', $nicename = false, $visited = array() ) {
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$chain = '';
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$parent = get_term( $id, 'category' );
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if ( is_wp_error( $parent ) )
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return $parent;
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if ( $nicename )
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$name = $parent->slug;
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else
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$name = $parent->name;
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if ( $parent->parent && ( $parent->parent != $parent->term_id ) && !in_array( $parent->parent, $visited ) ) {
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$visited[] = $parent->parent;
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$chain .= get_category_parents( $parent->parent, $link, $separator, $nicename, $visited );
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}
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if ( $link )
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$chain .= '<a href="' . esc_url( get_category_link( $parent->term_id ) ) . '">'.$name.'</a>' . $separator;
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else
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$chain .= $name.$separator;
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return $chain;
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}
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/**
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* Retrieve post categories.
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*
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* @since 0.71
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*
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* @param int $id Optional, default to current post ID. The post ID.
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* @return array
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*/
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function get_the_category( $id = false ) {
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$categories = get_the_terms( $id, 'category' );
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if ( ! $categories || is_wp_error( $categories ) )
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$categories = array();
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$categories = array_values( $categories );
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foreach ( array_keys( $categories ) as $key ) {
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_make_cat_compat( $categories[$key] );
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}
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/**
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* Filter the array of categories to return for a post.
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*
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* @since 3.1.0
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*
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* @param array $categories An array of categories to return for the post.
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*/
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return apply_filters( 'get_the_categories', $categories );
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}
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/**
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* Sort categories by name.
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*
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* Used by usort() as a callback, should not be used directly. Can actually be
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* used to sort any term object.
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*
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* @since 2.3.0
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* @access private
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*
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* @param object $a
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* @param object $b
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* @return int
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*/
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function _usort_terms_by_name( $a, $b ) {
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return strcmp( $a->name, $b->name );
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}
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/**
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* Sort categories by ID.
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*
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* Used by usort() as a callback, should not be used directly. Can actually be
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* used to sort any term object.
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*
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* @since 2.3.0
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* @access private
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*
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* @param object $a
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* @param object $b
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* @return int
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*/
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function _usort_terms_by_ID( $a, $b ) {
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if ( $a->term_id > $b->term_id )
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return 1;
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elseif ( $a->term_id < $b->term_id )
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return -1;
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else
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return 0;
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}
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/**
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* Retrieve category name based on category ID.
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*
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* @since 0.71
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*
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* @param int $cat_ID Category ID.
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* @return string|WP_Error Category name on success, WP_Error on failure.
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*/
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function get_the_category_by_ID( $cat_ID ) {
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$cat_ID = (int) $cat_ID;
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$category = get_term( $cat_ID, 'category' );
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if ( is_wp_error( $category ) )
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return $category;
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return ( $category ) ? $category->name : '';
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}
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/**
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* Retrieve category list in either HTML list or custom format.
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*
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* @since 1.5.1
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*
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* @global WP_Rewrite $wp_rewrite
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*
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* @param string $separator Optional, default is empty string. Separator for between the categories.
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* @param string $parents Optional. How to display the parents.
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* @param int $post_id Optional. Post ID to retrieve categories.
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* @return string
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*/
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function get_the_category_list( $separator = '', $parents='', $post_id = false ) {
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global $wp_rewrite;
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if ( ! is_object_in_taxonomy( get_post_type( $post_id ), 'category' ) ) {
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/** This filter is documented in wp-includes/category-template.php */
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return apply_filters( 'the_category', '', $separator, $parents );
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}
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$categories = get_the_category( $post_id );
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if ( empty( $categories ) ) {
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/** This filter is documented in wp-includes/category-template.php */
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return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents );
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}
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$rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
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$thelist = '';
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if ( '' == $separator ) {
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$thelist .= '<ul class="post-categories">';
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foreach ( $categories as $category ) {
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$thelist .= "\n\t<li>";
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switch ( strtolower( $parents ) ) {
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case 'multiple':
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if ( $category->parent )
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$thelist .= get_category_parents( $category->parent, true, $separator );
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
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break;
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case 'single':
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
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if ( $category->parent )
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$thelist .= get_category_parents( $category->parent, false, $separator );
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$thelist .= $category->name.'</a></li>';
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break;
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case '':
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default:
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
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}
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}
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$thelist .= '</ul>';
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} else {
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$i = 0;
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foreach ( $categories as $category ) {
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if ( 0 < $i )
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$thelist .= $separator;
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switch ( strtolower( $parents ) ) {
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case 'multiple':
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if ( $category->parent )
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$thelist .= get_category_parents( $category->parent, true, $separator );
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
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break;
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case 'single':
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
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if ( $category->parent )
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$thelist .= get_category_parents( $category->parent, false, $separator );
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$thelist .= "$category->name</a>";
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break;
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case '':
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default:
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$thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
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}
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++$i;
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}
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}
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/**
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* Filter the category or list of categories.
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*
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* @since 1.2.0
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*
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* @param array $thelist List of categories for the current post.
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* @param string $separator Separator used between the categories.
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* @param string $parents How to display the category parents. Accepts 'multiple',
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* 'single', or empty.
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*/
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return apply_filters( 'the_category', $thelist, $separator, $parents );
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}
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/**
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* Check if the current post in within any of the given categories.
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*
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* The given categories are checked against the post's categories' term_ids, names and slugs.
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* Categories given as integers will only be checked against the post's categories' term_ids.
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*
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* Prior to v2.5 of WordPress, category names were not supported.
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* Prior to v2.7, category slugs were not supported.
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* Prior to v2.7, only one category could be compared: in_category( $single_category ).
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* Prior to v2.7, this function could only be used in the WordPress Loop.
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* As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
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*
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* @since 1.2.0
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*
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* @param int|string|array $category Category ID, name or slug, or array of said.
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* @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
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* @return bool True if the current post is in any of the given categories.
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*/
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function in_category( $category, $post = null ) {
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if ( empty( $category ) )
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return false;
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return has_category( $category, $post );
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}
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/**
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* Display the category list for the post.
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*
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* @since 0.71
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*
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* @param string $separator Optional, default is empty string. Separator for between the categories.
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* @param string $parents Optional. How to display the parents.
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* @param int $post_id Optional. Post ID to retrieve categories.
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*/
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function the_category( $separator = '', $parents='', $post_id = false ) {
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echo get_the_category_list( $separator, $parents, $post_id );
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}
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/**
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* Retrieve category description.
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*
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* @since 1.0.0
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*
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* @param int $category Optional. Category ID. Will use global category ID by default.
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* @return string Category description, available.
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*/
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function category_description( $category = 0 ) {
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return term_description( $category, 'category' );
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}
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/**
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* Display or retrieve the HTML dropdown list of categories.
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*
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* The 'hierarchical' argument, which is disabled by default, will override the
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* depth argument, unless it is true. When the argument is false, it will
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* display all of the categories. When it is enabled it will use the value in
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* the 'depth' argument.
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*
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* @since 2.1.0
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* @since 4.2.0 Introduced the `value_field` argument.
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*
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* @param string|array $args {
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* Optional. Array or string of arguments to generate a categories drop-down element.
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*
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* @type string $show_option_all Text to display for showing all categories. Default empty.
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* @type string $show_option_none Text to display for showing no categories. Default empty.
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* @type string $option_none_value Value to use when no category is selected. Default empty.
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* @type string $orderby Which column to use for ordering categories. See get_terms() for a list
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* of accepted values. Default 'id' (term_id).
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* @type string $order Whether to order terms in ascending or descending order. Accepts 'ASC'
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* or 'DESC'. Default 'ASC'.
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* @type bool $pad_counts See get_terms() for an argument description. Default false.
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* @type bool|int $show_count Whether to include post counts. Accepts 0, 1, or their bool equivalents.
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* Default 0.
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* @type bool|int $hide_empty Whether to hide categories that don't have any posts. Accepts 0, 1, or
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* their bool equivalents. Default 1.
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* @type int $child_of Term ID to retrieve child terms of. See get_terms(). Default 0.
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* @type array|string $exclude Array or comma/space-separated string of term ids to exclude.
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* If `$include` is non-empty, `$exclude` is ignored. Default empty array.
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* @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, or their
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* bool equivalents. Default 1.
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* @type bool|int $hierarchical Whether to traverse the taxonomy hierarchy. Accepts 0, 1, or their bool
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* equivalents. Default 0.
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* @type int $depth Maximum depth. Default 0.
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* @type int $tab_index Tab index for the select element. Default 0 (no tabindex).
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* @type string $name Value for the 'name' attribute of the select element. Default 'cat'.
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* @type string $id Value for the 'id' attribute of the select element. Defaults to the value
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* of `$name`.
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* @type string $class Value for the 'class' attribute of the select element. Default 'postform'.
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* @type int|string $selected Value of the option that should be selected. Default 0.
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* @type string $value_field Term field that should be used to populate the 'value' attribute
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* of the option elements. Accepts any valid term field: 'term_id', 'name',
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* 'slug', 'term_group', 'term_taxonomy_id', 'taxonomy', 'description',
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* 'parent', 'count'. Default 'term_id'.
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* @type string $taxonomy Name of the category to retrieve. Default 'category'.
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* @type bool $hide_if_empty True to skip generating markup if no categories are found.
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* Default false (create select element even if no categories are found).
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* }
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* @return string HTML content only if 'echo' argument is 0.
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*/
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function wp_dropdown_categories( $args = '' ) {
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$defaults = array(
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'show_option_all' => '', 'show_option_none' => '',
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'orderby' => 'id', 'order' => 'ASC',
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'show_count' => 0,
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'hide_empty' => 1, 'child_of' => 0,
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'exclude' => '', 'echo' => 1,
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'selected' => 0, 'hierarchical' => 0,
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'name' => 'cat', 'id' => '',
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'class' => 'postform', 'depth' => 0,
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'tab_index' => 0, 'taxonomy' => 'category',
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'hide_if_empty' => false, 'option_none_value' => -1,
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'value_field' => 'term_id',
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);
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$defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;
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// Back compat.
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if ( isset( $args['type'] ) && 'link' == $args['type'] ) {
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_deprecated_argument( __FUNCTION__, '3.0', '' );
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$args['taxonomy'] = 'link_category';
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}
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$r = wp_parse_args( $args, $defaults );
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$option_none_value = $r['option_none_value'];
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if ( ! isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
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$r['pad_counts'] = true;
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}
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$tab_index = $r['tab_index'];
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$tab_index_attribute = '';
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if ( (int) $tab_index > 0 ) {
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$tab_index_attribute = " tabindex=\"$tab_index\"";
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}
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// Avoid clashes with the 'name' param of get_terms().
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$get_terms_args = $r;
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unset( $get_terms_args['name'] );
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$categories = get_terms( $r['taxonomy'], $get_terms_args );
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$name = esc_attr( $r['name'] );
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$class = esc_attr( $r['class'] );
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$id = $r['id'] ? esc_attr( $r['id'] ) : $name;
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if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
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$output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n";
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} else {
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$output = '';
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}
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if ( empty( $categories ) && ! $r['hide_if_empty'] && ! empty( $r['show_option_none'] ) ) {
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/**
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* Filter a taxonomy drop-down display element.
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*
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* A variety of taxonomy drop-down display elements can be modified
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* just prior to display via this filter. Filterable arguments include
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* 'show_option_none', 'show_option_all', and various forms of the
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* term name.
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*
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* @since 1.2.0
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*
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* @see wp_dropdown_categories()
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*
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* @param string $element Taxonomy element to list.
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*/
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$show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
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$output .= "\t<option value='" . esc_attr( $option_none_value ) . "' selected='selected'>$show_option_none</option>\n";
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}
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if ( ! empty( $categories ) ) {
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if ( $r['show_option_all'] ) {
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/** This filter is documented in wp-includes/category-template.php */
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$show_option_all = apply_filters( 'list_cats', $r['show_option_all'] );
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$selected = ( '0' === strval($r['selected']) ) ? " selected='selected'" : '';
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$output .= "\t<option value='0'$selected>$show_option_all</option>\n";
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}
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if ( $r['show_option_none'] ) {
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/** This filter is documented in wp-includes/category-template.php */
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$show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
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$selected = selected( $option_none_value, $r['selected'], false );
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$output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$selected>$show_option_none</option>\n";
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}
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if ( $r['hierarchical'] ) {
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$depth = $r['depth']; // Walk the full depth.
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} else {
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$depth = -1; // Flat.
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}
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$output .= walk_category_dropdown_tree( $categories, $depth, $r );
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}
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if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
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$output .= "</select>\n";
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}
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/**
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* Filter the taxonomy drop-down output.
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*
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* @since 2.1.0
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*
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* @param string $output HTML output.
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* @param array $r Arguments used to build the drop-down.
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*/
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$output = apply_filters( 'wp_dropdown_cats', $output, $r );
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if ( $r['echo'] ) {
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echo $output;
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}
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return $output;
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}
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|
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/**
|
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* Display or retrieve the HTML list of categories.
|
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*
|
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* The list of arguments is below:
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* 'show_option_all' (string) - Text to display for showing all categories.
|
|
* 'orderby' (string) default is 'ID' - What column to use for ordering the
|
|
* categories.
|
|
* 'order' (string) default is 'ASC' - What direction to order categories.
|
|
* 'show_count' (bool|int) default is 0 - Whether to show how many posts are
|
|
* in the category.
|
|
* 'hide_empty' (bool|int) default is 1 - Whether to hide categories that
|
|
* don't have any posts attached to them.
|
|
* 'use_desc_for_title' (bool|int) default is 1 - Whether to use the
|
|
* category description as the title attribute.
|
|
* 'feed' - See {@link get_categories()}.
|
|
* 'feed_type' - See {@link get_categories()}.
|
|
* 'feed_image' - See {@link get_categories()}.
|
|
* 'child_of' (int) default is 0 - See {@link get_categories()}.
|
|
* 'exclude' (string) - See {@link get_categories()}.
|
|
* 'exclude_tree' (string) - See {@link get_categories()}.
|
|
* 'echo' (bool|int) default is 1 - Whether to display or retrieve content.
|
|
* 'current_category' (int) - See {@link get_categories()}.
|
|
* 'hierarchical' (bool) - See {@link get_categories()}.
|
|
* 'title_li' (string) - See {@link get_categories()}.
|
|
* 'depth' (int) - The max depth.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string|array $args Optional. Override default arguments.
|
|
* @return false|string HTML content only if 'echo' argument is 0.
|
|
*/
|
|
function wp_list_categories( $args = '' ) {
|
|
$defaults = array(
|
|
'show_option_all' => '', 'show_option_none' => __('No categories'),
|
|
'orderby' => 'name', 'order' => 'ASC',
|
|
'style' => 'list',
|
|
'show_count' => 0, 'hide_empty' => 1,
|
|
'use_desc_for_title' => 1, 'child_of' => 0,
|
|
'feed' => '', 'feed_type' => '',
|
|
'feed_image' => '', 'exclude' => '',
|
|
'exclude_tree' => '', 'current_category' => 0,
|
|
'hierarchical' => true, 'title_li' => __( 'Categories' ),
|
|
'echo' => 1, 'depth' => 0,
|
|
'taxonomy' => 'category'
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] )
|
|
$r['pad_counts'] = true;
|
|
|
|
if ( true == $r['hierarchical'] ) {
|
|
$r['exclude_tree'] = $r['exclude'];
|
|
$r['exclude'] = '';
|
|
}
|
|
|
|
if ( ! isset( $r['class'] ) )
|
|
$r['class'] = ( 'category' == $r['taxonomy'] ) ? 'categories' : $r['taxonomy'];
|
|
|
|
if ( ! taxonomy_exists( $r['taxonomy'] ) ) {
|
|
return false;
|
|
}
|
|
|
|
$show_option_all = $r['show_option_all'];
|
|
$show_option_none = $r['show_option_none'];
|
|
|
|
$categories = get_categories( $r );
|
|
|
|
$output = '';
|
|
if ( $r['title_li'] && 'list' == $r['style'] ) {
|
|
$output = '<li class="' . esc_attr( $r['class'] ) . '">' . $r['title_li'] . '<ul>';
|
|
}
|
|
if ( empty( $categories ) ) {
|
|
if ( ! empty( $show_option_none ) ) {
|
|
if ( 'list' == $r['style'] ) {
|
|
$output .= '<li class="cat-item-none">' . $show_option_none . '</li>';
|
|
} else {
|
|
$output .= $show_option_none;
|
|
}
|
|
}
|
|
} else {
|
|
if ( ! empty( $show_option_all ) ) {
|
|
|
|
$posts_page = '';
|
|
|
|
// For taxonomies that belong only to custom post types, point to a valid archive.
|
|
$taxonomy_object = get_taxonomy( $r['taxonomy'] );
|
|
if ( ! in_array( 'post', $taxonomy_object->object_type ) && ! in_array( 'page', $taxonomy_object->object_type ) ) {
|
|
foreach ( $taxonomy_object->object_type as $object_type ) {
|
|
$_object_type = get_post_type_object( $object_type );
|
|
|
|
// Grab the first one.
|
|
if ( ! empty( $_object_type->has_archive ) ) {
|
|
$posts_page = get_post_type_archive_link( $object_type );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fallback for the 'All' link is the front page.
|
|
if ( ! $posts_page ) {
|
|
$posts_page = 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
|
|
}
|
|
|
|
$posts_page = esc_url( $posts_page );
|
|
if ( 'list' == $r['style'] ) {
|
|
$output .= "<li class='cat-item-all'><a href='$posts_page'>$show_option_all</a></li>";
|
|
} else {
|
|
$output .= "<a href='$posts_page'>$show_option_all</a>";
|
|
}
|
|
}
|
|
|
|
if ( empty( $r['current_category'] ) && ( is_category() || is_tax() || is_tag() ) ) {
|
|
$current_term_object = get_queried_object();
|
|
if ( $current_term_object && $r['taxonomy'] === $current_term_object->taxonomy ) {
|
|
$r['current_category'] = get_queried_object_id();
|
|
}
|
|
}
|
|
|
|
if ( $r['hierarchical'] ) {
|
|
$depth = $r['depth'];
|
|
} else {
|
|
$depth = -1; // Flat.
|
|
}
|
|
$output .= walk_category_tree( $categories, $depth, $r );
|
|
}
|
|
|
|
if ( $r['title_li'] && 'list' == $r['style'] )
|
|
$output .= '</ul></li>';
|
|
|
|
/**
|
|
* Filter the HTML output of a taxonomy list.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output HTML output.
|
|
* @param array $args An array of taxonomy-listing arguments.
|
|
*/
|
|
$html = apply_filters( 'wp_list_categories', $output, $args );
|
|
|
|
if ( $r['echo'] ) {
|
|
echo $html;
|
|
} else {
|
|
return $html;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Display tag cloud.
|
|
*
|
|
* The text size is set by the 'smallest' and 'largest' arguments, which will
|
|
* use the 'unit' argument value for the CSS text size unit. The 'format'
|
|
* argument can be 'flat' (default), 'list', or 'array'. The flat value for the
|
|
* 'format' argument will separate tags with spaces. The list value for the
|
|
* 'format' argument will format the tags in a UL HTML list. The array value for
|
|
* the 'format' argument will return in PHP array type format.
|
|
*
|
|
* The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
|
|
* The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC'.
|
|
*
|
|
* The 'number' argument is how many tags to return. By default, the limit will
|
|
* be to return the top 45 tags in the tag cloud list.
|
|
*
|
|
* The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
|
|
* text for the tooltip of the tag link.
|
|
*
|
|
* The 'topic_count_text_callback' argument is a function, which given the count
|
|
* of the posts with that tag returns a text for the tooltip of the tag link.
|
|
*
|
|
* The 'post_type' argument is used only when 'link' is set to 'edit'. It determines the post_type
|
|
* passed to edit.php for the popular tags edit links.
|
|
*
|
|
* The 'exclude' and 'include' arguments are used for the {@link get_tags()}
|
|
* function. Only one should be used, because only one will be used and the
|
|
* other ignored, if they are both set.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param array|string|null $args Optional. Override default arguments.
|
|
* @return void|array Generated tag cloud, only if no failures and 'array' is set for the 'format' argument.
|
|
* Otherwise, this function outputs the tag cloud.
|
|
*/
|
|
function wp_tag_cloud( $args = '' ) {
|
|
$defaults = array(
|
|
'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
|
|
'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
|
|
'exclude' => '', 'include' => '', 'link' => 'view', 'taxonomy' => 'post_tag', 'post_type' => '', 'echo' => true
|
|
);
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$tags = get_terms( $args['taxonomy'], array_merge( $args, array( 'orderby' => 'count', 'order' => 'DESC' ) ) ); // Always query top tags
|
|
|
|
if ( empty( $tags ) || is_wp_error( $tags ) )
|
|
return;
|
|
|
|
foreach ( $tags as $key => $tag ) {
|
|
if ( 'edit' == $args['link'] )
|
|
$link = get_edit_term_link( $tag->term_id, $tag->taxonomy, $args['post_type'] );
|
|
else
|
|
$link = get_term_link( intval($tag->term_id), $tag->taxonomy );
|
|
if ( is_wp_error( $link ) )
|
|
return;
|
|
|
|
$tags[ $key ]->link = $link;
|
|
$tags[ $key ]->id = $tag->term_id;
|
|
}
|
|
|
|
$return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
|
|
|
|
/**
|
|
* Filter the tag cloud output.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $return HTML output of the tag cloud.
|
|
* @param array $args An array of tag cloud arguments.
|
|
*/
|
|
$return = apply_filters( 'wp_tag_cloud', $return, $args );
|
|
|
|
if ( 'array' == $args['format'] || empty($args['echo']) )
|
|
return $return;
|
|
|
|
echo $return;
|
|
}
|
|
|
|
/**
|
|
* Default topic count scaling for tag links
|
|
*
|
|
* @param int $count number of posts with that tag
|
|
* @return int scaled count
|
|
*/
|
|
function default_topic_count_scale( $count ) {
|
|
return round(log10($count + 1) * 100);
|
|
}
|
|
|
|
/**
|
|
* Generates a tag cloud (heatmap) from provided data.
|
|
*
|
|
* The text size is set by the 'smallest' and 'largest' arguments, which will
|
|
* use the 'unit' argument value for the CSS text size unit. The 'format'
|
|
* argument can be 'flat' (default), 'list', or 'array'. The flat value for the
|
|
* 'format' argument will separate tags with spaces. The list value for the
|
|
* 'format' argument will format the tags in a UL HTML list. The array value for
|
|
* the 'format' argument will return in PHP array type format.
|
|
*
|
|
* The 'tag_cloud_sort' filter allows you to override the sorting.
|
|
* Passed to the filter: $tags array and $args array, has to return the $tags array
|
|
* after sorting it.
|
|
*
|
|
* The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
|
|
* The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC' or
|
|
* 'RAND'.
|
|
*
|
|
* The 'number' argument is how many tags to return. By default, the limit will
|
|
* be to return the entire tag cloud list.
|
|
*
|
|
* The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
|
|
* text for the tooltip of the tag link.
|
|
*
|
|
* The 'topic_count_text_callback' argument is a function, which given the count
|
|
* of the posts with that tag returns a text for the tooltip of the tag link.
|
|
*
|
|
* @todo Complete functionality.
|
|
* @since 2.3.0
|
|
*
|
|
* @param array $tags List of tags.
|
|
* @param string|array $args Optional, override default arguments.
|
|
* @return string|array Tag cloud as a string or an array, depending on 'format' argument.
|
|
*/
|
|
function wp_generate_tag_cloud( $tags, $args = '' ) {
|
|
$defaults = array(
|
|
'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 0,
|
|
'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
|
|
'topic_count_text' => null, 'topic_count_text_callback' => null,
|
|
'topic_count_scale_callback' => 'default_topic_count_scale', 'filter' => 1,
|
|
);
|
|
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$return = ( 'array' === $args['format'] ) ? array() : '';
|
|
|
|
if ( empty( $tags ) ) {
|
|
return $return;
|
|
}
|
|
|
|
// Juggle topic count tooltips:
|
|
if ( isset( $args['topic_count_text'] ) ) {
|
|
// First look for nooped plural support via topic_count_text.
|
|
$translate_nooped_plural = $args['topic_count_text'];
|
|
} elseif ( ! empty( $args['topic_count_text_callback'] ) ) {
|
|
// Look for the alternative callback style. Ignore the previous default.
|
|
if ( $args['topic_count_text_callback'] === 'default_topic_count_text' ) {
|
|
$translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
|
|
} else {
|
|
$translate_nooped_plural = false;
|
|
}
|
|
} elseif ( isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) {
|
|
// If no callback exists, look for the old-style single_text and multiple_text arguments.
|
|
$translate_nooped_plural = _n_noop( $args['single_text'], $args['multiple_text'] );
|
|
} else {
|
|
// This is the default for when no callback, plural, or argument is passed in.
|
|
$translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
|
|
}
|
|
|
|
/**
|
|
* Filter how the items in a tag cloud are sorted.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $tags Ordered array of terms.
|
|
* @param array $args An array of tag cloud arguments.
|
|
*/
|
|
$tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args );
|
|
if ( empty( $tags_sorted ) ) {
|
|
return $return;
|
|
}
|
|
|
|
if ( $tags_sorted !== $tags ) {
|
|
$tags = $tags_sorted;
|
|
unset( $tags_sorted );
|
|
} else {
|
|
if ( 'RAND' === $args['order'] ) {
|
|
shuffle( $tags );
|
|
} else {
|
|
// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
|
|
if ( 'name' === $args['orderby'] ) {
|
|
uasort( $tags, '_wp_object_name_sort_cb' );
|
|
} else {
|
|
uasort( $tags, '_wp_object_count_sort_cb' );
|
|
}
|
|
|
|
if ( 'DESC' === $args['order'] ) {
|
|
$tags = array_reverse( $tags, true );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $args['number'] > 0 )
|
|
$tags = array_slice( $tags, 0, $args['number'] );
|
|
|
|
$counts = array();
|
|
$real_counts = array(); // For the alt tag
|
|
foreach ( (array) $tags as $key => $tag ) {
|
|
$real_counts[ $key ] = $tag->count;
|
|
$counts[ $key ] = call_user_func( $args['topic_count_scale_callback'], $tag->count );
|
|
}
|
|
|
|
$min_count = min( $counts );
|
|
$spread = max( $counts ) - $min_count;
|
|
if ( $spread <= 0 )
|
|
$spread = 1;
|
|
$font_spread = $args['largest'] - $args['smallest'];
|
|
if ( $font_spread < 0 )
|
|
$font_spread = 1;
|
|
$font_step = $font_spread / $spread;
|
|
|
|
// Assemble the data that will be used to generate the tag cloud markup.
|
|
$tags_data = array();
|
|
foreach ( $tags as $key => $tag ) {
|
|
$tag_id = isset( $tag->id ) ? $tag->id : $key;
|
|
|
|
$count = $counts[ $key ];
|
|
$real_count = $real_counts[ $key ];
|
|
|
|
if ( $translate_nooped_plural ) {
|
|
$title = sprintf( translate_nooped_plural( $translate_nooped_plural, $real_count ), number_format_i18n( $real_count ) );
|
|
} else {
|
|
$title = call_user_func( $args['topic_count_text_callback'], $real_count, $tag, $args );
|
|
}
|
|
|
|
$tags_data[] = array(
|
|
'id' => $tag_id,
|
|
'url' => '#' != $tag->link ? $tag->link : '#',
|
|
'name' => $tag->name,
|
|
'title' => $title,
|
|
'slug' => $tag->slug,
|
|
'real_count' => $real_count,
|
|
'class' => 'tag-link-' . $tag_id,
|
|
'font_size' => $args['smallest'] + ( $count - $min_count ) * $font_step,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Filter the data used to generate the tag cloud.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param array $tags_data An array of term data for term used to generate the tag cloud.
|
|
*/
|
|
$tags_data = apply_filters( 'wp_generate_tag_cloud_data', $tags_data );
|
|
|
|
$a = array();
|
|
|
|
// generate the output links array
|
|
foreach ( $tags_data as $key => $tag_data ) {
|
|
$a[] = "<a href='" . esc_url( $tag_data['url'] ) . "' class='" . esc_attr( $tag_data['class'] ) . "' title='" . esc_attr( $tag_data['title'] ) . "' style='font-size: " . esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ) . ";'>" . esc_html( $tag_data['name'] ) . "</a>";
|
|
}
|
|
|
|
switch ( $args['format'] ) {
|
|
case 'array' :
|
|
$return =& $a;
|
|
break;
|
|
case 'list' :
|
|
$return = "<ul class='wp-tag-cloud'>\n\t<li>";
|
|
$return .= join( "</li>\n\t<li>", $a );
|
|
$return .= "</li>\n</ul>\n";
|
|
break;
|
|
default :
|
|
$return = join( $args['separator'], $a );
|
|
break;
|
|
}
|
|
|
|
if ( $args['filter'] ) {
|
|
/**
|
|
* Filter the generated output of a tag cloud.
|
|
*
|
|
* The filter is only evaluated if a true value is passed
|
|
* to the $filter argument in wp_generate_tag_cloud().
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @see wp_generate_tag_cloud()
|
|
*
|
|
* @param array|string $return String containing the generated HTML tag cloud output
|
|
* or an array of tag links if the 'format' argument
|
|
* equals 'array'.
|
|
* @param array $tags An array of terms used in the tag cloud.
|
|
* @param array $args An array of wp_generate_tag_cloud() arguments.
|
|
*/
|
|
return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
|
|
}
|
|
|
|
else
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Callback for comparing objects based on name
|
|
*
|
|
* @since 3.1.0
|
|
* @access private
|
|
* @return int
|
|
*/
|
|
function _wp_object_name_sort_cb( $a, $b ) {
|
|
return strnatcasecmp( $a->name, $b->name );
|
|
}
|
|
|
|
/**
|
|
* Callback for comparing objects based on count
|
|
*
|
|
* @since 3.1.0
|
|
* @access private
|
|
* @return bool
|
|
*/
|
|
function _wp_object_count_sort_cb( $a, $b ) {
|
|
return ( $a->count > $b->count );
|
|
}
|
|
|
|
//
|
|
// Helper functions
|
|
//
|
|
|
|
/**
|
|
* Retrieve HTML list content for category list.
|
|
*
|
|
* @uses Walker_Category to create HTML list content.
|
|
* @since 2.1.0
|
|
* @see Walker_Category::walk() for parameters and return description.
|
|
* @return string
|
|
*/
|
|
function walk_category_tree() {
|
|
$args = func_get_args();
|
|
// the user's options are the third parameter
|
|
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
|
|
$walker = new Walker_Category;
|
|
} else {
|
|
$walker = $args[2]['walker'];
|
|
}
|
|
return call_user_func_array( array( $walker, 'walk' ), $args );
|
|
}
|
|
|
|
/**
|
|
* Retrieve HTML dropdown (select) content for category list.
|
|
*
|
|
* @uses Walker_CategoryDropdown to create HTML dropdown content.
|
|
* @since 2.1.0
|
|
* @see Walker_CategoryDropdown::walk() for parameters and return description.
|
|
* @return string
|
|
*/
|
|
function walk_category_dropdown_tree() {
|
|
$args = func_get_args();
|
|
// the user's options are the third parameter
|
|
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
|
|
$walker = new Walker_CategoryDropdown;
|
|
} else {
|
|
$walker = $args[2]['walker'];
|
|
}
|
|
return call_user_func_array( array( $walker, 'walk' ), $args );
|
|
}
|
|
|
|
/**
|
|
* Create HTML list of categories.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_Category extends Walker {
|
|
/**
|
|
* What the class handles.
|
|
*
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
public $tree_type = 'category';
|
|
|
|
/**
|
|
* Database fields to use.
|
|
*
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this
|
|
* @var array
|
|
*/
|
|
public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
|
|
|
|
/**
|
|
* Starts the list before the elements are added.
|
|
*
|
|
* @see Walker::start_lvl()
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of category. Used for tab indentation.
|
|
* @param array $args An array of arguments. Will only append content if style argument value is 'list'.
|
|
* @see wp_list_categories()
|
|
*/
|
|
public function start_lvl( &$output, $depth = 0, $args = array() ) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent<ul class='children'>\n";
|
|
}
|
|
|
|
/**
|
|
* Ends the list of after the elements are added.
|
|
*
|
|
* @see Walker::end_lvl()
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of category. Used for tab indentation.
|
|
* @param array $args An array of arguments. Will only append content if style argument value is 'list'.
|
|
* @wsee wp_list_categories()
|
|
*/
|
|
public function end_lvl( &$output, $depth = 0, $args = array() ) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent</ul>\n";
|
|
}
|
|
|
|
/**
|
|
* Start the element output.
|
|
*
|
|
* @see Walker::start_el()
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $category Category data object.
|
|
* @param int $depth Depth of category in reference to parents. Default 0.
|
|
* @param array $args An array of arguments. @see wp_list_categories()
|
|
* @param int $id ID of the current category.
|
|
*/
|
|
public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
|
|
/** This filter is documented in wp-includes/category-template.php */
|
|
$cat_name = apply_filters(
|
|
'list_cats',
|
|
esc_attr( $category->name ),
|
|
$category
|
|
);
|
|
|
|
// Don't generate an element if the category name is empty.
|
|
if ( ! $cat_name ) {
|
|
return;
|
|
}
|
|
|
|
$link = '<a href="' . esc_url( get_term_link( $category ) ) . '" ';
|
|
if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
|
|
/**
|
|
* Filter the category description for display.
|
|
*
|
|
* @since 1.2.0
|
|
*
|
|
* @param string $description Category description.
|
|
* @param object $category Category object.
|
|
*/
|
|
$link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
|
|
}
|
|
|
|
$link .= '>';
|
|
$link .= $cat_name . '</a>';
|
|
|
|
if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
|
|
$link .= ' ';
|
|
|
|
if ( empty( $args['feed_image'] ) ) {
|
|
$link .= '(';
|
|
}
|
|
|
|
$link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"';
|
|
|
|
if ( empty( $args['feed'] ) ) {
|
|
$alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
|
|
} else {
|
|
$alt = ' alt="' . $args['feed'] . '"';
|
|
$name = $args['feed'];
|
|
$link .= empty( $args['title'] ) ? '' : $args['title'];
|
|
}
|
|
|
|
$link .= '>';
|
|
|
|
if ( empty( $args['feed_image'] ) ) {
|
|
$link .= $name;
|
|
} else {
|
|
$link .= "<img src='" . $args['feed_image'] . "'$alt" . ' />';
|
|
}
|
|
$link .= '</a>';
|
|
|
|
if ( empty( $args['feed_image'] ) ) {
|
|
$link .= ')';
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $args['show_count'] ) ) {
|
|
$link .= ' (' . number_format_i18n( $category->count ) . ')';
|
|
}
|
|
if ( 'list' == $args['style'] ) {
|
|
$output .= "\t<li";
|
|
$css_classes = array(
|
|
'cat-item',
|
|
'cat-item-' . $category->term_id,
|
|
);
|
|
|
|
if ( ! empty( $args['current_category'] ) ) {
|
|
$_current_category = get_term( $args['current_category'], $category->taxonomy );
|
|
if ( $category->term_id == $args['current_category'] ) {
|
|
$css_classes[] = 'current-cat';
|
|
} elseif ( $category->term_id == $_current_category->parent ) {
|
|
$css_classes[] = 'current-cat-parent';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filter the list of CSS classes to include with each category in the list.
|
|
*
|
|
* @since 4.2.0
|
|
*
|
|
* @see wp_list_categories()
|
|
*
|
|
* @param array $css_classes An array of CSS classes to be applied to each list item.
|
|
* @param object $category Category data object.
|
|
* @param int $depth Depth of page, used for padding.
|
|
* @param array $args An array of wp_list_categories() arguments.
|
|
*/
|
|
$css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
|
|
|
|
$output .= ' class="' . $css_classes . '"';
|
|
$output .= ">$link\n";
|
|
} else {
|
|
$output .= "\t$link<br />\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Ends the element output, if needed.
|
|
*
|
|
* @see Walker::end_el()
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $page Not used.
|
|
* @param int $depth Depth of category. Not used.
|
|
* @param array $args An array of arguments. Only uses 'list' for whether should append to output. @see wp_list_categories()
|
|
*/
|
|
public function end_el( &$output, $page, $depth = 0, $args = array() ) {
|
|
if ( 'list' != $args['style'] )
|
|
return;
|
|
|
|
$output .= "</li>\n";
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Create HTML dropdown list of Categories.
|
|
*
|
|
* @package WordPress
|
|
* @since 2.1.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_CategoryDropdown extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 2.1.0
|
|
* @var string
|
|
*/
|
|
public $tree_type = 'category';
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 2.1.0
|
|
* @todo Decouple this
|
|
* @var array
|
|
*/
|
|
public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
|
|
|
|
/**
|
|
* Start the element output.
|
|
*
|
|
* @see Walker::start_el()
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $category Category data object.
|
|
* @param int $depth Depth of category. Used for padding.
|
|
* @param array $args Uses 'selected', 'show_count', and 'value_field' keys, if they exist.
|
|
* See {@see wp_dropdown_categories()}.
|
|
*/
|
|
public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
|
|
$pad = str_repeat(' ', $depth * 3);
|
|
|
|
/** This filter is documented in wp-includes/category-template.php */
|
|
$cat_name = apply_filters( 'list_cats', $category->name, $category );
|
|
|
|
if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
|
|
$value_field = $args['value_field'];
|
|
} else {
|
|
$value_field = 'term_id';
|
|
}
|
|
|
|
$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $category->{$value_field} ) . "\"";
|
|
|
|
if ( $category->{$value_field} == $args['selected'] )
|
|
$output .= ' selected="selected"';
|
|
$output .= '>';
|
|
$output .= $pad.$cat_name;
|
|
if ( $args['show_count'] )
|
|
$output .= ' ('. number_format_i18n( $category->count ) .')';
|
|
$output .= "</option>\n";
|
|
}
|
|
}
|
|
|
|
//
|
|
// Tags
|
|
//
|
|
|
|
/**
|
|
* Retrieve the link to the tag.
|
|
*
|
|
* @since 2.3.0
|
|
* @see get_term_link()
|
|
*
|
|
* @param int|object $tag Tag ID or object.
|
|
* @return string Link on success, empty string if tag does not exist.
|
|
*/
|
|
function get_tag_link( $tag ) {
|
|
if ( ! is_object( $tag ) )
|
|
$tag = (int) $tag;
|
|
|
|
$tag = get_term_link( $tag, 'post_tag' );
|
|
|
|
if ( is_wp_error( $tag ) )
|
|
return '';
|
|
|
|
return $tag;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the tags for a post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param int $id Post ID.
|
|
* @return array|false|WP_Error Array of tag objects on success, false on failure.
|
|
*/
|
|
function get_the_tags( $id = 0 ) {
|
|
|
|
/**
|
|
* Filter the array of tags for the given post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @see get_the_terms()
|
|
*
|
|
* @param array $terms An array of tags for the given post.
|
|
*/
|
|
return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the tags for a post formatted as a string.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $before Optional. Before tags.
|
|
* @param string $sep Optional. Between tags.
|
|
* @param string $after Optional. After tags.
|
|
* @param int $id Optional. Post ID. Defaults to the current post.
|
|
* @return string|false|WP_Error A list of tags on success, false if there are no terms, WP_Error on failure.
|
|
*/
|
|
function get_the_tag_list( $before = '', $sep = '', $after = '', $id = 0 ) {
|
|
|
|
/**
|
|
* Filter the tags list for a given post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $tag_list List of tags.
|
|
* @param string $before String to use before tags.
|
|
* @param string $sep String to use between the tags.
|
|
* @param string $after String to use after tags.
|
|
* @param int $id Post ID.
|
|
*/
|
|
return apply_filters( 'the_tags', get_the_term_list( $id, 'post_tag', $before, $sep, $after ), $before, $sep, $after, $id );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the tags for a post.
|
|
*
|
|
* @since 2.3.0
|
|
*
|
|
* @param string $before Optional. Before list.
|
|
* @param string $sep Optional. Separate items using this.
|
|
* @param string $after Optional. After list.
|
|
*/
|
|
function the_tags( $before = null, $sep = ', ', $after = '' ) {
|
|
if ( null === $before )
|
|
$before = __('Tags: ');
|
|
echo get_the_tag_list($before, $sep, $after);
|
|
}
|
|
|
|
/**
|
|
* Retrieve tag description.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int $tag Optional. Tag ID. Will use global tag ID by default.
|
|
* @return string Tag description, available.
|
|
*/
|
|
function tag_description( $tag = 0 ) {
|
|
return term_description( $tag );
|
|
}
|
|
|
|
/**
|
|
* Retrieve term description.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int $term Optional. Term ID. Will use global term ID by default.
|
|
* @param string $taxonomy Optional taxonomy name. Defaults to 'post_tag'.
|
|
* @return string Term description, available.
|
|
*/
|
|
function term_description( $term = 0, $taxonomy = 'post_tag' ) {
|
|
if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
|
|
$term = get_queried_object();
|
|
if ( $term ) {
|
|
$taxonomy = $term->taxonomy;
|
|
$term = $term->term_id;
|
|
}
|
|
}
|
|
$description = get_term_field( 'description', $term, $taxonomy );
|
|
return is_wp_error( $description ) ? '' : $description;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the terms of the taxonomy that are attached to the post.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int|object $post Post ID or object.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @return array|false|WP_Error Array of term objects on success, false if there are no terms
|
|
* or the post does not exist, WP_Error on failure.
|
|
*/
|
|
function get_the_terms( $post, $taxonomy ) {
|
|
if ( ! $post = get_post( $post ) )
|
|
return false;
|
|
|
|
$terms = get_object_term_cache( $post->ID, $taxonomy );
|
|
if ( false === $terms ) {
|
|
$terms = wp_get_object_terms( $post->ID, $taxonomy );
|
|
wp_cache_add($post->ID, $terms, $taxonomy . '_relationships');
|
|
}
|
|
|
|
/**
|
|
* Filter the list of terms attached to the given post.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param array|WP_Error $terms List of attached terms, or WP_Error on failure.
|
|
* @param int $post_id Post ID.
|
|
* @param string $taxonomy Name of the taxonomy.
|
|
*/
|
|
$terms = apply_filters( 'get_the_terms', $terms, $post->ID, $taxonomy );
|
|
|
|
if ( empty( $terms ) )
|
|
return false;
|
|
|
|
return $terms;
|
|
}
|
|
|
|
/**
|
|
* Retrieve a post's terms as a list with specified format.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int $id Post ID.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @param string $before Optional. Before list.
|
|
* @param string $sep Optional. Separate items using this.
|
|
* @param string $after Optional. After list.
|
|
* @return string|false|WP_Error A list of terms on success, false if there are no terms, WP_Error on failure.
|
|
*/
|
|
function get_the_term_list( $id, $taxonomy, $before = '', $sep = '', $after = '' ) {
|
|
$terms = get_the_terms( $id, $taxonomy );
|
|
|
|
if ( is_wp_error( $terms ) )
|
|
return $terms;
|
|
|
|
if ( empty( $terms ) )
|
|
return false;
|
|
|
|
$links = array();
|
|
|
|
foreach ( $terms as $term ) {
|
|
$link = get_term_link( $term, $taxonomy );
|
|
if ( is_wp_error( $link ) ) {
|
|
return $link;
|
|
}
|
|
$links[] = '<a href="' . esc_url( $link ) . '" rel="tag">' . $term->name . '</a>';
|
|
}
|
|
|
|
/**
|
|
* Filter the term links for a given taxonomy.
|
|
*
|
|
* The dynamic portion of the filter name, `$taxonomy`, refers
|
|
* to the taxonomy slug.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param array $links An array of term links.
|
|
*/
|
|
$term_links = apply_filters( "term_links-$taxonomy", $links );
|
|
|
|
return $before . join( $sep, $term_links ) . $after;
|
|
}
|
|
|
|
/**
|
|
* Display the terms in a list.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param int $id Post ID.
|
|
* @param string $taxonomy Taxonomy name.
|
|
* @param string $before Optional. Before list.
|
|
* @param string $sep Optional. Separate items using this.
|
|
* @param string $after Optional. After list.
|
|
* @return false|void False on WordPress error.
|
|
*/
|
|
function the_terms( $id, $taxonomy, $before = '', $sep = ', ', $after = '' ) {
|
|
$term_list = get_the_term_list( $id, $taxonomy, $before, $sep, $after );
|
|
|
|
if ( is_wp_error( $term_list ) )
|
|
return false;
|
|
|
|
/**
|
|
* Filter the list of terms to display.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @param array $term_list List of terms to display.
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* @param string $taxonomy The taxonomy name.
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* @param string $before String to use before the terms.
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* @param string $sep String to use between the terms.
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* @param string $after String to use after the terms.
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*/
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echo apply_filters( 'the_terms', $term_list, $taxonomy, $before, $sep, $after );
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}
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|
|
/**
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* Check if the current post has any of given category.
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*
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|
* @since 3.1.0
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*
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|
* @param string|int|array $category Optional. The category name/term_id/slug or array of them to check for.
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|
* @param int|object $post Optional. Post to check instead of the current post.
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|
* @return bool True if the current post has any of the given categories (or any category, if no category specified).
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|
*/
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function has_category( $category = '', $post = null ) {
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|
return has_term( $category, 'category', $post );
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|
}
|
|
|
|
/**
|
|
* Check if the current post has any of given tags.
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|
*
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|
* The given tags are checked against the post's tags' term_ids, names and slugs.
|
|
* Tags given as integers will only be checked against the post's tags' term_ids.
|
|
* If no tags are given, determines if post has any tags.
|
|
*
|
|
* Prior to v2.7 of WordPress, tags given as integers would also be checked against the post's tags' names and slugs (in addition to term_ids)
|
|
* Prior to v2.7, this function could only be used in the WordPress Loop.
|
|
* As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
|
|
*
|
|
* @since 2.6.0
|
|
*
|
|
* @param string|int|array $tag Optional. The tag name/term_id/slug or array of them to check for.
|
|
* @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
|
|
* @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
|
|
*/
|
|
function has_tag( $tag = '', $post = null ) {
|
|
return has_term( $tag, 'post_tag', $post );
|
|
}
|
|
|
|
/**
|
|
* Check if the current post has any of given terms.
|
|
*
|
|
* The given terms are checked against the post's terms' term_ids, names and slugs.
|
|
* Terms given as integers will only be checked against the post's terms' term_ids.
|
|
* If no terms are given, determines if post has any terms.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param string|int|array $term Optional. The term name/term_id/slug or array of them to check for.
|
|
* @param string $taxonomy Taxonomy name
|
|
* @param int|object $post Optional. Post to check instead of the current post.
|
|
* @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
|
|
*/
|
|
function has_term( $term = '', $taxonomy = '', $post = null ) {
|
|
$post = get_post($post);
|
|
|
|
if ( !$post )
|
|
return false;
|
|
|
|
$r = is_object_in_term( $post->ID, $taxonomy, $term );
|
|
if ( is_wp_error( $r ) )
|
|
return false;
|
|
|
|
return $r;
|
|
}
|