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2dce718157
Object type-specific actions that should happen before or after modification of metadata have so far been part of the respective wrapper functions. By using action and filter hooks, this changeset ensures they are always executed, even when calling the lower-level Meta API functions directly, which the REST API does as a prime example. Merges [43729] to trunk. Props flixos90, spacedmonkey. Fixes #44467. Built from https://develop.svn.wordpress.org/trunk@43982 git-svn-id: http://core.svn.wordpress.org/trunk@43814 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1437 lines
45 KiB
PHP
1437 lines
45 KiB
PHP
<?php
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/**
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* Core Metadata API
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*
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* Functions for retrieving and manipulating metadata of various WordPress object types. Metadata
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* for an object is a represented by a simple key-value pair. Objects may contain multiple
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* metadata entries that share the same key and differ only in their value.
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*
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* @package WordPress
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* @subpackage Meta
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*/
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/**
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* Add metadata for the specified object.
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*
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* @since 2.9.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
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* @param int $object_id ID of the object metadata is for
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* @param string $meta_key Metadata key
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* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
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* @param bool $unique Optional, default is false.
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* Whether the specified metadata key should be unique for the object.
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* If true, and the object already has a value for the specified metadata key,
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* no change will be made.
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* @return int|false The meta ID on success, false on failure.
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*/
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function add_metadata( $meta_type, $object_id, $meta_key, $meta_value, $unique = false ) {
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global $wpdb;
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if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) ) {
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return false;
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}
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$object_id = absint( $object_id );
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if ( ! $object_id ) {
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return false;
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}
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$table = _get_meta_table( $meta_type );
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if ( ! $table ) {
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return false;
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}
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$meta_subtype = get_object_subtype( $meta_type, $object_id );
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$column = sanitize_key( $meta_type . '_id' );
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// expected_slashed ($meta_key)
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$meta_key = wp_unslash( $meta_key );
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$meta_value = wp_unslash( $meta_value );
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$meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );
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/**
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* Filters whether to add metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user). Returning a non-null value
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* will effectively short-circuit the function.
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*
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* @since 3.1.0
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*
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* @param null|bool $check Whether to allow adding metadata for the given type.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value. Must be serializable if non-scalar.
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* @param bool $unique Whether the specified meta key should be unique
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* for the object. Optional. Default false.
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*/
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$check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique );
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if ( null !== $check ) {
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return $check;
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}
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if ( $unique && $wpdb->get_var(
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$wpdb->prepare(
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"SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d",
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$meta_key,
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$object_id
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)
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) ) {
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return false;
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}
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$_meta_value = $meta_value;
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$meta_value = maybe_serialize( $meta_value );
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/**
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* Fires immediately before meta of a specific type is added.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user).
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*
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* @since 3.1.0
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*
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "add_{$meta_type}_meta", $object_id, $meta_key, $_meta_value );
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$result = $wpdb->insert(
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$table,
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array(
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$column => $object_id,
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'meta_key' => $meta_key,
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'meta_value' => $meta_value,
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)
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);
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if ( ! $result ) {
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return false;
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}
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$mid = (int) $wpdb->insert_id;
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wp_cache_delete( $object_id, $meta_type . '_meta' );
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/**
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* Fires immediately after meta of a specific type is added.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user).
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*
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* @since 2.9.0
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*
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* @param int $mid The meta ID after successful update.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "added_{$meta_type}_meta", $mid, $object_id, $meta_key, $_meta_value );
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return $mid;
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}
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/**
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* Update metadata for the specified object. If no value already exists for the specified object
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* ID and metadata key, the metadata will be added.
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*
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* @since 2.9.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
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* @param int $object_id ID of the object metadata is for
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* @param string $meta_key Metadata key
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* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
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* @param mixed $prev_value Optional. If specified, only update existing metadata entries with
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* the specified value. Otherwise, update all entries.
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* @return int|bool The new meta field ID if a field with the given key didn't exist and was
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* therefore added, true on successful update, false on failure.
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*/
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function update_metadata( $meta_type, $object_id, $meta_key, $meta_value, $prev_value = '' ) {
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global $wpdb;
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if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) ) {
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return false;
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}
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$object_id = absint( $object_id );
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if ( ! $object_id ) {
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return false;
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}
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$table = _get_meta_table( $meta_type );
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if ( ! $table ) {
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return false;
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}
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$meta_subtype = get_object_subtype( $meta_type, $object_id );
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$column = sanitize_key( $meta_type . '_id' );
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$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
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// expected_slashed ($meta_key)
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$raw_meta_key = $meta_key;
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$meta_key = wp_unslash( $meta_key );
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$passed_value = $meta_value;
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$meta_value = wp_unslash( $meta_value );
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$meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );
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/**
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* Filters whether to update metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user). Returning a non-null value
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* will effectively short-circuit the function.
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*
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* @since 3.1.0
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*
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* @param null|bool $check Whether to allow updating metadata for the given type.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value. Must be serializable if non-scalar.
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* @param mixed $prev_value Optional. If specified, only update existing
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* metadata entries with the specified value.
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* Otherwise, update all entries.
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*/
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$check = apply_filters( "update_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $prev_value );
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if ( null !== $check ) {
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return (bool) $check;
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}
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// Compare existing value to new value if no prev value given and the key exists only once.
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if ( empty( $prev_value ) ) {
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$old_value = get_metadata( $meta_type, $object_id, $meta_key );
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if ( count( $old_value ) == 1 ) {
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if ( $old_value[0] === $meta_value ) {
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return false;
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}
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}
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}
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$meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) );
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if ( empty( $meta_ids ) ) {
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return add_metadata( $meta_type, $object_id, $raw_meta_key, $passed_value );
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}
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$_meta_value = $meta_value;
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$meta_value = maybe_serialize( $meta_value );
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$data = compact( 'meta_value' );
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$where = array(
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$column => $object_id,
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'meta_key' => $meta_key,
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);
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if ( ! empty( $prev_value ) ) {
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$prev_value = maybe_serialize( $prev_value );
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$where['meta_value'] = $prev_value;
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}
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foreach ( $meta_ids as $meta_id ) {
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/**
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* Fires immediately before updating metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user).
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*
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* @since 2.9.0
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*
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* @param int $meta_id ID of the metadata entry to update.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );
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if ( 'post' == $meta_type ) {
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/**
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* Fires immediately before updating a post's metadata.
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*
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* @since 2.9.0
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*
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* @param int $meta_id ID of metadata entry to update.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
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}
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}
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$result = $wpdb->update( $table, $data, $where );
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if ( ! $result ) {
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return false;
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}
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wp_cache_delete( $object_id, $meta_type . '_meta' );
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foreach ( $meta_ids as $meta_id ) {
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/**
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* Fires immediately after updating metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user).
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*
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* @since 2.9.0
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*
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* @param int $meta_id ID of updated metadata entry.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );
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if ( 'post' == $meta_type ) {
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/**
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* Fires immediately after updating a post's metadata.
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*
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* @since 2.9.0
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*
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* @param int $meta_id ID of updated metadata entry.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
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}
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}
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return true;
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}
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/**
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* Delete metadata for the specified object.
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*
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* @since 2.9.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
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* @param int $object_id ID of the object metadata is for
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* @param string $meta_key Metadata key
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* @param mixed $meta_value Optional. Metadata value. Must be serializable if non-scalar. If specified, only delete
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* metadata entries with this value. Otherwise, delete all entries with the specified meta_key.
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* Pass `null`, `false`, or an empty string to skip this check. (For backward compatibility,
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* it is not possible to pass an empty string to delete those entries with an empty string
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* for a value.)
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* @param bool $delete_all Optional, default is false. If true, delete matching metadata entries for all objects,
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* ignoring the specified object_id. Otherwise, only delete matching metadata entries for
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* the specified object_id.
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* @return bool True on successful delete, false on failure.
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*/
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function delete_metadata( $meta_type, $object_id, $meta_key, $meta_value = '', $delete_all = false ) {
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global $wpdb;
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if ( ! $meta_type || ! $meta_key || ! is_numeric( $object_id ) && ! $delete_all ) {
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return false;
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}
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$object_id = absint( $object_id );
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if ( ! $object_id && ! $delete_all ) {
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return false;
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}
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$table = _get_meta_table( $meta_type );
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if ( ! $table ) {
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return false;
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}
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$type_column = sanitize_key( $meta_type . '_id' );
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$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
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// expected_slashed ($meta_key)
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$meta_key = wp_unslash( $meta_key );
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$meta_value = wp_unslash( $meta_value );
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/**
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* Filters whether to delete metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user). Returning a non-null value
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* will effectively short-circuit the function.
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*
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* @since 3.1.0
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*
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* @param null|bool $delete Whether to allow metadata deletion of the given type.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value. Must be serializable if non-scalar.
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* @param bool $delete_all Whether to delete the matching metadata entries
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* for all objects, ignoring the specified $object_id.
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* Default false.
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*/
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$check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all );
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if ( null !== $check ) {
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return (bool) $check;
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}
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$_meta_value = $meta_value;
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$meta_value = maybe_serialize( $meta_value );
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$query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key );
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if ( ! $delete_all ) {
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$query .= $wpdb->prepare( " AND $type_column = %d", $object_id );
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}
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if ( '' !== $meta_value && null !== $meta_value && false !== $meta_value ) {
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$query .= $wpdb->prepare( ' AND meta_value = %s', $meta_value );
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}
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$meta_ids = $wpdb->get_col( $query );
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if ( ! count( $meta_ids ) ) {
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return false;
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}
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if ( $delete_all ) {
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if ( '' !== $meta_value && null !== $meta_value && false !== $meta_value ) {
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$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s AND meta_value = %s", $meta_key, $meta_value ) );
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} else {
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$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s", $meta_key ) );
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}
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}
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/**
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* Fires immediately before deleting metadata of a specific type.
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*
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* The dynamic portion of the hook, `$meta_type`, refers to the meta
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* object type (comment, post, term, or user).
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*
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* @since 3.1.0
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*
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* @param array $meta_ids An array of metadata entry IDs to delete.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "delete_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value );
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// Old-style action.
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if ( 'post' == $meta_type ) {
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/**
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* Fires immediately before deleting metadata for a post.
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*
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* @since 2.9.0
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*
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* @param array $meta_ids An array of post metadata entry IDs to delete.
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*/
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do_action( 'delete_postmeta', $meta_ids );
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}
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$query = "DELETE FROM $table WHERE $id_column IN( " . implode( ',', $meta_ids ) . ' )';
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$count = $wpdb->query( $query );
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if ( ! $count ) {
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return false;
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}
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if ( $delete_all ) {
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foreach ( (array) $object_ids as $o_id ) {
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wp_cache_delete( $o_id, $meta_type . '_meta' );
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}
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} else {
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wp_cache_delete( $object_id, $meta_type . '_meta' );
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}
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|
|
/**
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|
* Fires immediately after deleting metadata of a specific type.
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|
*
|
|
* The dynamic portion of the hook name, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user).
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*
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* @since 2.9.0
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*
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* @param array $meta_ids An array of deleted metadata entry IDs.
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* @param int $object_id Object ID.
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* @param string $meta_key Meta key.
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* @param mixed $meta_value Meta value.
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*/
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do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value );
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// Old-style action.
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if ( 'post' == $meta_type ) {
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/**
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* Fires immediately after deleting metadata for a post.
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*
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* @since 2.9.0
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*
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* @param array $meta_ids An array of deleted post metadata entry IDs.
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*/
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do_action( 'deleted_postmeta', $meta_ids );
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}
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return true;
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}
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|
|
/**
|
|
* Retrieve metadata for the specified object.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int $object_id ID of the object metadata is for
|
|
* @param string $meta_key Optional. Metadata key. If not specified, retrieve all metadata for
|
|
* the specified object.
|
|
* @param bool $single Optional, default is false.
|
|
* If true, return only the first value of the specified meta_key.
|
|
* This parameter has no effect if meta_key is not specified.
|
|
* @return mixed Single metadata value, or array of values
|
|
*/
|
|
function get_metadata( $meta_type, $object_id, $meta_key = '', $single = false ) {
|
|
if ( ! $meta_type || ! is_numeric( $object_id ) ) {
|
|
return false;
|
|
}
|
|
|
|
$object_id = absint( $object_id );
|
|
if ( ! $object_id ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Filters whether to retrieve metadata of a specific type.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user). Returning a non-null value
|
|
* will effectively short-circuit the function.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param null|array|string $value The value get_metadata() should return - a single metadata value,
|
|
* or an array of values.
|
|
* @param int $object_id Object ID.
|
|
* @param string $meta_key Meta key.
|
|
* @param bool $single Whether to return only the first value of the specified $meta_key.
|
|
*/
|
|
$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single );
|
|
if ( null !== $check ) {
|
|
if ( $single && is_array( $check ) ) {
|
|
return $check[0];
|
|
} else {
|
|
return $check;
|
|
}
|
|
}
|
|
|
|
$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );
|
|
|
|
if ( ! $meta_cache ) {
|
|
$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
|
|
$meta_cache = $meta_cache[ $object_id ];
|
|
}
|
|
|
|
if ( ! $meta_key ) {
|
|
return $meta_cache;
|
|
}
|
|
|
|
if ( isset( $meta_cache[ $meta_key ] ) ) {
|
|
if ( $single ) {
|
|
return maybe_unserialize( $meta_cache[ $meta_key ][0] );
|
|
} else {
|
|
return array_map( 'maybe_unserialize', $meta_cache[ $meta_key ] );
|
|
}
|
|
}
|
|
|
|
if ( $single ) {
|
|
return '';
|
|
} else {
|
|
return array();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determine if a meta key is set for a given object
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int $object_id ID of the object metadata is for
|
|
* @param string $meta_key Metadata key.
|
|
* @return bool True of the key is set, false if not.
|
|
*/
|
|
function metadata_exists( $meta_type, $object_id, $meta_key ) {
|
|
if ( ! $meta_type || ! is_numeric( $object_id ) ) {
|
|
return false;
|
|
}
|
|
|
|
$object_id = absint( $object_id );
|
|
if ( ! $object_id ) {
|
|
return false;
|
|
}
|
|
|
|
/** This filter is documented in wp-includes/meta.php */
|
|
$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true );
|
|
if ( null !== $check ) {
|
|
return (bool) $check;
|
|
}
|
|
|
|
$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );
|
|
|
|
if ( ! $meta_cache ) {
|
|
$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
|
|
$meta_cache = $meta_cache[ $object_id ];
|
|
}
|
|
|
|
if ( isset( $meta_cache[ $meta_key ] ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Get meta data by meta ID
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int $meta_id ID for a specific meta row
|
|
* @return object|false Meta object or false.
|
|
*/
|
|
function get_metadata_by_mid( $meta_type, $meta_id ) {
|
|
global $wpdb;
|
|
|
|
if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
|
|
return false;
|
|
}
|
|
|
|
$meta_id = intval( $meta_id );
|
|
if ( $meta_id <= 0 ) {
|
|
return false;
|
|
}
|
|
|
|
$table = _get_meta_table( $meta_type );
|
|
if ( ! $table ) {
|
|
return false;
|
|
}
|
|
|
|
$id_column = ( 'user' == $meta_type ) ? 'umeta_id' : 'meta_id';
|
|
|
|
/**
|
|
* Filters whether to retrieve metadata of a specific type by meta ID.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user). Returning a non-null value
|
|
* will effectively short-circuit the function.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param mixed $value The value get_metadata_by_mid() should return.
|
|
* @param int $meta_id Meta ID.
|
|
*/
|
|
$check = apply_filters( "get_{$meta_type}_metadata_by_mid", null, $meta_id );
|
|
if ( null !== $check ) {
|
|
return $check;
|
|
}
|
|
|
|
$meta = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $table WHERE $id_column = %d", $meta_id ) );
|
|
|
|
if ( empty( $meta ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( isset( $meta->meta_value ) ) {
|
|
$meta->meta_value = maybe_unserialize( $meta->meta_value );
|
|
}
|
|
|
|
return $meta;
|
|
}
|
|
|
|
/**
|
|
* Update meta data by meta ID
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int $meta_id ID for a specific meta row
|
|
* @param string $meta_value Metadata value
|
|
* @param string $meta_key Optional, you can provide a meta key to update it
|
|
* @return bool True on successful update, false on failure.
|
|
*/
|
|
function update_metadata_by_mid( $meta_type, $meta_id, $meta_value, $meta_key = false ) {
|
|
global $wpdb;
|
|
|
|
// Make sure everything is valid.
|
|
if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
|
|
return false;
|
|
}
|
|
|
|
$meta_id = intval( $meta_id );
|
|
if ( $meta_id <= 0 ) {
|
|
return false;
|
|
}
|
|
|
|
$table = _get_meta_table( $meta_type );
|
|
if ( ! $table ) {
|
|
return false;
|
|
}
|
|
|
|
$column = sanitize_key( $meta_type . '_id' );
|
|
$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
|
|
|
|
/**
|
|
* Filters whether to update metadata of a specific type by meta ID.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user). Returning a non-null value
|
|
* will effectively short-circuit the function.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param null|bool $check Whether to allow updating metadata for the given type.
|
|
* @param int $meta_id Meta ID.
|
|
* @param mixed $meta_value Meta value. Must be serializable if non-scalar.
|
|
* @param string|bool $meta_key Meta key, if provided.
|
|
*/
|
|
$check = apply_filters( "update_{$meta_type}_metadata_by_mid", null, $meta_id, $meta_value, $meta_key );
|
|
if ( null !== $check ) {
|
|
return (bool) $check;
|
|
}
|
|
|
|
// Fetch the meta and go on if it's found.
|
|
if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) {
|
|
$original_key = $meta->meta_key;
|
|
$object_id = $meta->{$column};
|
|
|
|
// If a new meta_key (last parameter) was specified, change the meta key,
|
|
// otherwise use the original key in the update statement.
|
|
if ( false === $meta_key ) {
|
|
$meta_key = $original_key;
|
|
} elseif ( ! is_string( $meta_key ) ) {
|
|
return false;
|
|
}
|
|
|
|
$meta_subtype = get_object_subtype( $meta_type, $object_id );
|
|
|
|
// Sanitize the meta
|
|
$_meta_value = $meta_value;
|
|
$meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );
|
|
$meta_value = maybe_serialize( $meta_value );
|
|
|
|
// Format the data query arguments.
|
|
$data = array(
|
|
'meta_key' => $meta_key,
|
|
'meta_value' => $meta_value,
|
|
);
|
|
|
|
// Format the where query arguments.
|
|
$where = array();
|
|
$where[ $id_column ] = $meta_id;
|
|
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );
|
|
|
|
if ( 'post' == $meta_type ) {
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
|
|
}
|
|
|
|
// Run the update query, all fields in $data are %s, $where is a %d.
|
|
$result = $wpdb->update( $table, $data, $where, '%s', '%d' );
|
|
if ( ! $result ) {
|
|
return false;
|
|
}
|
|
|
|
// Clear the caches.
|
|
wp_cache_delete( $object_id, $meta_type . '_meta' );
|
|
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value );
|
|
|
|
if ( 'post' == $meta_type ) {
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// And if the meta was not found.
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Delete meta data by meta ID
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int $meta_id ID for a specific meta row
|
|
* @return bool True on successful delete, false on failure.
|
|
*/
|
|
function delete_metadata_by_mid( $meta_type, $meta_id ) {
|
|
global $wpdb;
|
|
|
|
// Make sure everything is valid.
|
|
if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
|
|
return false;
|
|
}
|
|
|
|
$meta_id = intval( $meta_id );
|
|
if ( $meta_id <= 0 ) {
|
|
return false;
|
|
}
|
|
|
|
$table = _get_meta_table( $meta_type );
|
|
if ( ! $table ) {
|
|
return false;
|
|
}
|
|
|
|
// object and id columns
|
|
$column = sanitize_key( $meta_type . '_id' );
|
|
$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
|
|
|
|
/**
|
|
* Filters whether to delete metadata of a specific type by meta ID.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user). Returning a non-null value
|
|
* will effectively short-circuit the function.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param null|bool $delete Whether to allow metadata deletion of the given type.
|
|
* @param int $meta_id Meta ID.
|
|
*/
|
|
$check = apply_filters( "delete_{$meta_type}_metadata_by_mid", null, $meta_id );
|
|
if ( null !== $check ) {
|
|
return (bool) $check;
|
|
}
|
|
|
|
// Fetch the meta and go on if it's found.
|
|
if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) {
|
|
$object_id = $meta->{$column};
|
|
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( "delete_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );
|
|
|
|
// Old-style action.
|
|
if ( 'post' == $meta_type || 'comment' == $meta_type ) {
|
|
/**
|
|
* Fires immediately before deleting post or comment metadata of a specific type.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (post or comment).
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @param int $meta_id ID of the metadata entry to delete.
|
|
*/
|
|
do_action( "delete_{$meta_type}meta", $meta_id );
|
|
}
|
|
|
|
// Run the query, will return true if deleted, false otherwise
|
|
$result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) );
|
|
|
|
// Clear the caches.
|
|
wp_cache_delete( $object_id, $meta_type . '_meta' );
|
|
|
|
/** This action is documented in wp-includes/meta.php */
|
|
do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );
|
|
|
|
// Old-style action.
|
|
if ( 'post' == $meta_type || 'comment' == $meta_type ) {
|
|
/**
|
|
* Fires immediately after deleting post or comment metadata of a specific type.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (post or comment).
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @param int $meta_ids Deleted metadata entry ID.
|
|
*/
|
|
do_action( "deleted_{$meta_type}meta", $meta_id );
|
|
}
|
|
|
|
return $result;
|
|
|
|
}
|
|
|
|
// Meta id was not found.
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Update the metadata cache for the specified objects.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @param int|array $object_ids Array or comma delimited list of object IDs to update cache for
|
|
* @return array|false Metadata cache for the specified objects, or false on failure.
|
|
*/
|
|
function update_meta_cache( $meta_type, $object_ids ) {
|
|
global $wpdb;
|
|
|
|
if ( ! $meta_type || ! $object_ids ) {
|
|
return false;
|
|
}
|
|
|
|
$table = _get_meta_table( $meta_type );
|
|
if ( ! $table ) {
|
|
return false;
|
|
}
|
|
|
|
$column = sanitize_key( $meta_type . '_id' );
|
|
|
|
if ( ! is_array( $object_ids ) ) {
|
|
$object_ids = preg_replace( '|[^0-9,]|', '', $object_ids );
|
|
$object_ids = explode( ',', $object_ids );
|
|
}
|
|
|
|
$object_ids = array_map( 'intval', $object_ids );
|
|
|
|
/**
|
|
* Filters whether to update the metadata cache of a specific type.
|
|
*
|
|
* The dynamic portion of the hook, `$meta_type`, refers to the meta
|
|
* object type (comment, post, term, or user). Returning a non-null value
|
|
* will effectively short-circuit the function.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param mixed $check Whether to allow updating the meta cache of the given type.
|
|
* @param array $object_ids Array of object IDs to update the meta cache for.
|
|
*/
|
|
$check = apply_filters( "update_{$meta_type}_metadata_cache", null, $object_ids );
|
|
if ( null !== $check ) {
|
|
return (bool) $check;
|
|
}
|
|
|
|
$cache_key = $meta_type . '_meta';
|
|
$ids = array();
|
|
$cache = array();
|
|
foreach ( $object_ids as $id ) {
|
|
$cached_object = wp_cache_get( $id, $cache_key );
|
|
if ( false === $cached_object ) {
|
|
$ids[] = $id;
|
|
} else {
|
|
$cache[ $id ] = $cached_object;
|
|
}
|
|
}
|
|
|
|
if ( empty( $ids ) ) {
|
|
return $cache;
|
|
}
|
|
|
|
// Get meta info
|
|
$id_list = join( ',', $ids );
|
|
$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
|
|
$meta_list = $wpdb->get_results( "SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list) ORDER BY $id_column ASC", ARRAY_A );
|
|
|
|
if ( ! empty( $meta_list ) ) {
|
|
foreach ( $meta_list as $metarow ) {
|
|
$mpid = intval( $metarow[ $column ] );
|
|
$mkey = $metarow['meta_key'];
|
|
$mval = $metarow['meta_value'];
|
|
|
|
// Force subkeys to be array type:
|
|
if ( ! isset( $cache[ $mpid ] ) || ! is_array( $cache[ $mpid ] ) ) {
|
|
$cache[ $mpid ] = array();
|
|
}
|
|
if ( ! isset( $cache[ $mpid ][ $mkey ] ) || ! is_array( $cache[ $mpid ][ $mkey ] ) ) {
|
|
$cache[ $mpid ][ $mkey ] = array();
|
|
}
|
|
|
|
// Add a value to the current pid/key:
|
|
$cache[ $mpid ][ $mkey ][] = $mval;
|
|
}
|
|
}
|
|
|
|
foreach ( $ids as $id ) {
|
|
if ( ! isset( $cache[ $id ] ) ) {
|
|
$cache[ $id ] = array();
|
|
}
|
|
wp_cache_add( $id, $cache[ $id ], $cache_key );
|
|
}
|
|
|
|
return $cache;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the queue for lazy-loading metadata.
|
|
*
|
|
* @since 4.5.0
|
|
*
|
|
* @return WP_Metadata_Lazyloader $lazyloader Metadata lazyloader queue.
|
|
*/
|
|
function wp_metadata_lazyloader() {
|
|
static $wp_metadata_lazyloader;
|
|
|
|
if ( null === $wp_metadata_lazyloader ) {
|
|
$wp_metadata_lazyloader = new WP_Metadata_Lazyloader();
|
|
}
|
|
|
|
return $wp_metadata_lazyloader;
|
|
}
|
|
|
|
/**
|
|
* Given a meta query, generates SQL clauses to be appended to a main query.
|
|
*
|
|
* @since 3.2.0
|
|
*
|
|
* @see WP_Meta_Query
|
|
*
|
|
* @param array $meta_query A meta query.
|
|
* @param string $type Type of meta.
|
|
* @param string $primary_table Primary database table name.
|
|
* @param string $primary_id_column Primary ID column name.
|
|
* @param object $context Optional. The main query object
|
|
* @return array Associative array of `JOIN` and `WHERE` SQL.
|
|
*/
|
|
function get_meta_sql( $meta_query, $type, $primary_table, $primary_id_column, $context = null ) {
|
|
$meta_query_obj = new WP_Meta_Query( $meta_query );
|
|
return $meta_query_obj->get_sql( $type, $primary_table, $primary_id_column, $context );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the name of the metadata table for the specified object type.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @global wpdb $wpdb WordPress database abstraction object.
|
|
*
|
|
* @param string $type Type of object to get metadata table for (e.g., comment, post, term, or user).
|
|
* @return string|false Metadata table name, or false if no metadata table exists
|
|
*/
|
|
function _get_meta_table( $type ) {
|
|
global $wpdb;
|
|
|
|
$table_name = $type . 'meta';
|
|
|
|
if ( empty( $wpdb->$table_name ) ) {
|
|
return false;
|
|
}
|
|
|
|
return $wpdb->$table_name;
|
|
}
|
|
|
|
/**
|
|
* Determines whether a meta key is considered protected.
|
|
*
|
|
* @since 3.1.3
|
|
*
|
|
* @param string $meta_key Meta key.
|
|
* @param string|null $meta_type Optional. Type of object metadata is for (e.g., comment, post, term, or user).
|
|
* @return bool Whether the meta key is considered protected.
|
|
*/
|
|
function is_protected_meta( $meta_key, $meta_type = null ) {
|
|
$protected = ( '_' == $meta_key[0] );
|
|
|
|
/**
|
|
* Filters whether a meta key is considered protected.
|
|
*
|
|
* @since 3.2.0
|
|
*
|
|
* @param bool $protected Whether the key is considered protected.
|
|
* @param string $meta_key Meta key.
|
|
* @param string|null $meta_type Type of object metadata is for (e.g., comment, post, term, or user).
|
|
*/
|
|
return apply_filters( 'is_protected_meta', $protected, $meta_key, $meta_type );
|
|
}
|
|
|
|
/**
|
|
* Sanitize meta value.
|
|
*
|
|
* @since 3.1.3
|
|
* @since 4.9.8 The `$object_subtype` parameter was added.
|
|
*
|
|
* @param string $meta_key Meta key.
|
|
* @param mixed $meta_value Meta value to sanitize.
|
|
* @param string $object_type Type of object the meta is registered to.
|
|
* @param string $object_subtype Optional. The subtype of the object type.
|
|
*
|
|
* @return mixed Sanitized $meta_value.
|
|
*/
|
|
function sanitize_meta( $meta_key, $meta_value, $object_type, $object_subtype = '' ) {
|
|
if ( ! empty( $object_subtype ) && has_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}" ) ) {
|
|
|
|
/**
|
|
* Filters the sanitization of a specific meta key of a specific meta type and subtype.
|
|
*
|
|
* The dynamic portions of the hook name, `$object_type`, `$meta_key`,
|
|
* and `$object_subtype`, refer to the metadata object type (comment, post, term, or user),
|
|
* the meta key value, and the object subtype respectively.
|
|
*
|
|
* @since 4.9.8
|
|
*
|
|
* @param mixed $meta_value Meta value to sanitize.
|
|
* @param string $meta_key Meta key.
|
|
* @param string $object_type Object type.
|
|
* @param string $object_subtype Object subtype.
|
|
*/
|
|
return apply_filters( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $meta_value, $meta_key, $object_type, $object_subtype );
|
|
}
|
|
|
|
/**
|
|
* Filters the sanitization of a specific meta key of a specific meta type.
|
|
*
|
|
* The dynamic portions of the hook name, `$meta_type`, and `$meta_key`,
|
|
* refer to the metadata object type (comment, post, term, or user) and the meta
|
|
* key value, respectively.
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @param mixed $meta_value Meta value to sanitize.
|
|
* @param string $meta_key Meta key.
|
|
* @param string $object_type Object type.
|
|
*/
|
|
return apply_filters( "sanitize_{$object_type}_meta_{$meta_key}", $meta_value, $meta_key, $object_type );
|
|
}
|
|
|
|
/**
|
|
* Registers a meta key.
|
|
*
|
|
* It is recommended to register meta keys for a specific combination of object type and object subtype. If passing
|
|
* an object subtype is omitted, the meta key will be registered for the entire object type, however it can be partly
|
|
* overridden in case a more specific meta key of the same name exists for the same object type and a subtype.
|
|
*
|
|
* If an object type does not support any subtypes, such as users or comments, you should commonly call this function
|
|
* without passing a subtype.
|
|
*
|
|
* @since 3.3.0
|
|
* @since 4.6.0 {@link https://core.trac.wordpress.org/ticket/35658 Modified
|
|
* to support an array of data to attach to registered meta keys}. Previous arguments for
|
|
* `$sanitize_callback` and `$auth_callback` have been folded into this array.
|
|
* @since 4.9.8 The `$object_subtype` argument was added to the arguments array.
|
|
*
|
|
* @param string $object_type Type of object this meta is registered to.
|
|
* @param string $meta_key Meta key to register.
|
|
* @param array $args {
|
|
* Data used to describe the meta key when registered.
|
|
*
|
|
* @type string $object_subtype A subtype; e.g. if the object type is "post", the post type. If left empty,
|
|
* the meta key will be registered on the entire object type. Default empty.
|
|
* @type string $type The type of data associated with this meta key.
|
|
* Valid values are 'string', 'boolean', 'integer', and 'number'.
|
|
* @type string $description A description of the data attached to this meta key.
|
|
* @type bool $single Whether the meta key has one value per object, or an array of values per object.
|
|
* @type string $sanitize_callback A function or method to call when sanitizing `$meta_key` data.
|
|
* @type string $auth_callback Optional. A function or method to call when performing edit_post_meta, add_post_meta, and delete_post_meta capability checks.
|
|
* @type bool $show_in_rest Whether data associated with this meta key can be considered public.
|
|
* }
|
|
* @param string|array $deprecated Deprecated. Use `$args` instead.
|
|
*
|
|
* @return bool True if the meta key was successfully registered in the global array, false if not.
|
|
* Registering a meta key with distinct sanitize and auth callbacks will fire those
|
|
* callbacks, but will not add to the global registry.
|
|
*/
|
|
function register_meta( $object_type, $meta_key, $args, $deprecated = null ) {
|
|
global $wp_meta_keys;
|
|
|
|
if ( ! is_array( $wp_meta_keys ) ) {
|
|
$wp_meta_keys = array();
|
|
}
|
|
|
|
$defaults = array(
|
|
'object_subtype' => '',
|
|
'type' => 'string',
|
|
'description' => '',
|
|
'single' => false,
|
|
'sanitize_callback' => null,
|
|
'auth_callback' => null,
|
|
'show_in_rest' => false,
|
|
);
|
|
|
|
// There used to be individual args for sanitize and auth callbacks
|
|
$has_old_sanitize_cb = false;
|
|
$has_old_auth_cb = false;
|
|
|
|
if ( is_callable( $args ) ) {
|
|
$args = array(
|
|
'sanitize_callback' => $args,
|
|
);
|
|
|
|
$has_old_sanitize_cb = true;
|
|
} else {
|
|
$args = (array) $args;
|
|
}
|
|
|
|
if ( is_callable( $deprecated ) ) {
|
|
$args['auth_callback'] = $deprecated;
|
|
$has_old_auth_cb = true;
|
|
}
|
|
|
|
/**
|
|
* Filters the registration arguments when registering meta.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @param array $args Array of meta registration arguments.
|
|
* @param array $defaults Array of default arguments.
|
|
* @param string $object_type Object type.
|
|
* @param string $meta_key Meta key.
|
|
*/
|
|
$args = apply_filters( 'register_meta_args', $args, $defaults, $object_type, $meta_key );
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$object_subtype = ! empty( $args['object_subtype'] ) ? $args['object_subtype'] : '';
|
|
|
|
// If `auth_callback` is not provided, fall back to `is_protected_meta()`.
|
|
if ( empty( $args['auth_callback'] ) ) {
|
|
if ( is_protected_meta( $meta_key, $object_type ) ) {
|
|
$args['auth_callback'] = '__return_false';
|
|
} else {
|
|
$args['auth_callback'] = '__return_true';
|
|
}
|
|
}
|
|
|
|
// Back-compat: old sanitize and auth callbacks are applied to all of an object type.
|
|
if ( is_callable( $args['sanitize_callback'] ) ) {
|
|
if ( ! empty( $object_subtype ) ) {
|
|
add_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'], 10, 4 );
|
|
} else {
|
|
add_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'], 10, 3 );
|
|
}
|
|
}
|
|
|
|
if ( is_callable( $args['auth_callback'] ) ) {
|
|
if ( ! empty( $object_subtype ) ) {
|
|
add_filter( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['auth_callback'], 10, 6 );
|
|
} else {
|
|
add_filter( "auth_{$object_type}_meta_{$meta_key}", $args['auth_callback'], 10, 6 );
|
|
}
|
|
}
|
|
|
|
// Global registry only contains meta keys registered with the array of arguments added in 4.6.0.
|
|
if ( ! $has_old_auth_cb && ! $has_old_sanitize_cb ) {
|
|
unset( $args['object_subtype'] );
|
|
|
|
$wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ] = $args;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks if a meta key is registered.
|
|
*
|
|
* @since 4.6.0
|
|
* @since 4.9.8 The `$object_subtype` parameter was added.
|
|
*
|
|
* @param string $object_type The type of object.
|
|
* @param string $meta_key The meta key.
|
|
* @param string $object_subtype Optional. The subtype of the object type.
|
|
*
|
|
* @return bool True if the meta key is registered to the object type and, if provided,
|
|
* the object subtype. False if not.
|
|
*/
|
|
function registered_meta_key_exists( $object_type, $meta_key, $object_subtype = '' ) {
|
|
$meta_keys = get_registered_meta_keys( $object_type, $object_subtype );
|
|
|
|
return isset( $meta_keys[ $meta_key ] );
|
|
}
|
|
|
|
/**
|
|
* Unregisters a meta key from the list of registered keys.
|
|
*
|
|
* @since 4.6.0
|
|
* @since 4.9.8 The `$object_subtype` parameter was added.
|
|
*
|
|
* @param string $object_type The type of object.
|
|
* @param string $meta_key The meta key.
|
|
* @param string $object_subtype Optional. The subtype of the object type.
|
|
* @return bool True if successful. False if the meta key was not registered.
|
|
*/
|
|
function unregister_meta_key( $object_type, $meta_key, $object_subtype = '' ) {
|
|
global $wp_meta_keys;
|
|
|
|
if ( ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
|
|
return false;
|
|
}
|
|
|
|
$args = $wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ];
|
|
|
|
if ( isset( $args['sanitize_callback'] ) && is_callable( $args['sanitize_callback'] ) ) {
|
|
if ( ! empty( $object_subtype ) ) {
|
|
remove_filter( "sanitize_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['sanitize_callback'] );
|
|
} else {
|
|
remove_filter( "sanitize_{$object_type}_meta_{$meta_key}", $args['sanitize_callback'] );
|
|
}
|
|
}
|
|
|
|
if ( isset( $args['auth_callback'] ) && is_callable( $args['auth_callback'] ) ) {
|
|
if ( ! empty( $object_subtype ) ) {
|
|
remove_filter( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $args['auth_callback'] );
|
|
} else {
|
|
remove_filter( "auth_{$object_type}_meta_{$meta_key}", $args['auth_callback'] );
|
|
}
|
|
}
|
|
|
|
unset( $wp_meta_keys[ $object_type ][ $object_subtype ][ $meta_key ] );
|
|
|
|
// Do some clean up
|
|
if ( empty( $wp_meta_keys[ $object_type ][ $object_subtype ] ) ) {
|
|
unset( $wp_meta_keys[ $object_type ][ $object_subtype ] );
|
|
}
|
|
if ( empty( $wp_meta_keys[ $object_type ] ) ) {
|
|
unset( $wp_meta_keys[ $object_type ] );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Retrieves a list of registered meta keys for an object type.
|
|
*
|
|
* @since 4.6.0
|
|
* @since 4.9.8 The `$object_subtype` parameter was added.
|
|
*
|
|
* @param string $object_type The type of object. Post, comment, user, term.
|
|
* @param string $object_subtype Optional. The subtype of the object type.
|
|
* @return array List of registered meta keys.
|
|
*/
|
|
function get_registered_meta_keys( $object_type, $object_subtype = '' ) {
|
|
global $wp_meta_keys;
|
|
|
|
if ( ! is_array( $wp_meta_keys ) || ! isset( $wp_meta_keys[ $object_type ] ) || ! isset( $wp_meta_keys[ $object_type ][ $object_subtype ] ) ) {
|
|
return array();
|
|
}
|
|
|
|
return $wp_meta_keys[ $object_type ][ $object_subtype ];
|
|
}
|
|
|
|
/**
|
|
* Retrieves registered metadata for a specified object.
|
|
*
|
|
* The results include both meta that is registered specifically for the
|
|
* object's subtype and meta that is registered for the entire object type.
|
|
*
|
|
* @since 4.6.0
|
|
*
|
|
* @param string $object_type Type of object to request metadata for. (e.g. comment, post, term, user)
|
|
* @param int $object_id ID of the object the metadata is for.
|
|
* @param string $meta_key Optional. Registered metadata key. If not specified, retrieve all registered
|
|
* metadata for the specified object.
|
|
* @return mixed A single value or array of values for a key if specified. An array of all registered keys
|
|
* and values for an object ID if not. False if a given $meta_key is not registered.
|
|
*/
|
|
function get_registered_metadata( $object_type, $object_id, $meta_key = '' ) {
|
|
$object_subtype = get_object_subtype( $object_type, $object_id );
|
|
|
|
if ( ! empty( $meta_key ) ) {
|
|
if ( ! empty( $object_subtype ) && ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
|
|
$object_subtype = '';
|
|
}
|
|
|
|
if ( ! registered_meta_key_exists( $object_type, $meta_key, $object_subtype ) ) {
|
|
return false;
|
|
}
|
|
|
|
$meta_keys = get_registered_meta_keys( $object_type, $object_subtype );
|
|
$meta_key_data = $meta_keys[ $meta_key ];
|
|
|
|
$data = get_metadata( $object_type, $object_id, $meta_key, $meta_key_data['single'] );
|
|
|
|
return $data;
|
|
}
|
|
|
|
$data = get_metadata( $object_type, $object_id );
|
|
if ( ! $data ) {
|
|
return array();
|
|
}
|
|
|
|
$meta_keys = get_registered_meta_keys( $object_type );
|
|
if ( ! empty( $object_subtype ) ) {
|
|
$meta_keys = array_merge( $meta_keys, get_registered_meta_keys( $object_type, $object_subtype ) );
|
|
}
|
|
|
|
return array_intersect_key( $data, $meta_keys );
|
|
}
|
|
|
|
/**
|
|
* Filter out `register_meta()` args based on a whitelist.
|
|
* `register_meta()` args may change over time, so requiring the whitelist
|
|
* to be explicitly turned off is a warranty seal of sorts.
|
|
*
|
|
* @access private
|
|
* @since 4.6.0
|
|
*
|
|
* @param array $args Arguments from `register_meta()`.
|
|
* @param array $default_args Default arguments for `register_meta()`.
|
|
*
|
|
* @return array Filtered arguments.
|
|
*/
|
|
function _wp_register_meta_args_whitelist( $args, $default_args ) {
|
|
return array_intersect_key( $args, $default_args );
|
|
}
|
|
|
|
/**
|
|
* Returns the object subtype for a given object ID of a specific type.
|
|
*
|
|
* @since 4.9.8
|
|
*
|
|
* @param string $object_type Type of object to request metadata for. (e.g. comment, post, term, user)
|
|
* @param int $object_id ID of the object to retrieve its subtype.
|
|
* @return string The object subtype or an empty string if unspecified subtype.
|
|
*/
|
|
function get_object_subtype( $object_type, $object_id ) {
|
|
$object_id = (int) $object_id;
|
|
$object_subtype = '';
|
|
|
|
switch ( $object_type ) {
|
|
case 'post':
|
|
$post_type = get_post_type( $object_id );
|
|
|
|
if ( ! empty( $post_type ) ) {
|
|
$object_subtype = $post_type;
|
|
}
|
|
break;
|
|
|
|
case 'term':
|
|
$term = get_term( $object_id );
|
|
if ( ! $term instanceof WP_Term ) {
|
|
break;
|
|
}
|
|
|
|
$object_subtype = $term->taxonomy;
|
|
break;
|
|
|
|
case 'comment':
|
|
$comment = get_comment( $object_id );
|
|
if ( ! $comment ) {
|
|
break;
|
|
}
|
|
|
|
$object_subtype = 'comment';
|
|
break;
|
|
|
|
case 'user':
|
|
$user = get_user_by( 'id', $object_id );
|
|
if ( ! $user ) {
|
|
break;
|
|
}
|
|
|
|
$object_subtype = 'user';
|
|
break;
|
|
}
|
|
|
|
/**
|
|
* Filters the object subtype identifier for a non standard object type.
|
|
*
|
|
* The dynamic portion of the hook, `$object_type`, refers to the object
|
|
* type (post, comment, term, or user).
|
|
*
|
|
* @since 4.9.8
|
|
*
|
|
* @param string $object_subtype Empty string to override.
|
|
* @param int $object_id ID of the object to get the subtype for.
|
|
*/
|
|
return apply_filters( "get_object_subtype_{$object_type}", $object_subtype, $object_id );
|
|
}
|