Query: Ensure that only a single post can be returned on date/time based queries.
Cache API: Ensure proper escaping around the stats method in the cache API.
Formatting: Expand `sanitize_file_name` to have better support for utf8 characters.
Brings the changes in [47634], [47635], [47637], and [47638] to the 4.2 branch.
Props: batmoo, ehti, nickdaugherty, peterwilsoncc, sergeybiryukov, sstoqnov, westi, whyisjake, whyisjake, xknown.
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`is_array( 1, '1-foo' )` returns true, which means that `is_page( 1 )`
was returning true when on a page with the slug '1-foo'. We avoid this odd
behavior by casting the queried object ID to a string before testing against
the value passed to the conditional function.
This also helps to avoid a problem where an arbitrary value for `$page` would
cause `is_page( $page )` to return true if the query had been manipulated by
a plugin to show that the current page's ID is 0.
Props boonebgorges, r-a-y, nunomorgadinho, wonderboymusic, clifgriffin.
Fixes#24674.
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It's possible to have an empty `tax_query` and `is_tax=true` when the initial
query contains a taxonomy var (and is processed as such during
`WP_Query::parse_query()`) but the taxonomy var is unset during a 'parse_query'
callback. While this kind of behavior is not necessarily something we need to
support, we should continue to avoid PHP notices in such cases, as we did prior
to WP 4.1.
Fixes#31246.
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The implementation of `meta_query` orderby introduced in [31312] put clause
identifiers into a 'name' parameter of the clause. For greater clarity, this
changeset updates the syntax to use the associative array key used when
defining `meta_query` parameters, instead of the 'name' parameter.
Props Funkatronic, DrewAPicture.
Fixes#31045.
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`WP_Meta_Query` clauses now support a 'name' parameter. When building a
`WP_Query` object, the value of 'orderby' can reference this 'name', so that
it's possible to order by any clause in a meta_query, not just the first one
(as when using 'orderby=meta_value'). This improvement also makes it possible
to order by multiple meta query clauses (or by any other eligible field plus
a meta query clause), using the array syntax for 'orderby' introduced in [29027].
Props Funkatronic, boonebgorges.
Fixes#31045.
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Per our inline documentation standards, no further use of the `@uses` tag is recommended as used and used-by relationships can be derived through other means. This removes most uses of the tag in core documentation, with remaining tags to be converted to `@global` or `@see` as they apply.
Fixes#30191.
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`setup_postdata()` is responsible for setting a number of global variables
that are used for post pagination (`$pages`, `$page`, `$nextpage`) and the
generation of post excerpts (`$more`). These variables should be sensitive to
the currently running instance of `WP_Query` - rather than the main query -
so that these features work properly inside of secondary `WP_Query` loops.
This changeset moves the logic of `setup_postdata()` into a method on `WP_Query`,
and converts `setup_postdata()` to a wrapper.
Props boonebgorges, wonderboymusic.
See #25349.
Fixes#9256, #20904.
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Previously, tax query arguments could be joined by a single AND or OR relation.
Now, these queries can be arbitrarily nested, allowing clauses to be linked
together with multiple relations.
In a few places, WP_Query runs through a list of clauses in a tax_query in order
to set certain query vars for backward compatibility. The necessary changes have
been made to WP_Query to support this feature with the new complex structure of
tax_query. Unit tests are included for these backward compatibility fixes.
Unit tests for the new nesting syntax are included.
Props boonebgorges.
Fixes#29718. See #29738.
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When using legacy `meta_key`, `meta_value`, etc. arguments in `WP_Query`,
they're converted into the first clause of a `meta_query`. By using that
clause instead of the original arguments, we make sure that behavior is
consistent between the two available formats.
props boonebgorges.
fixes#16814.
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The shortcode callbacks for `gallery` and `playlist` check for `'RAND' == $atts['order']`, which isn't a valid value for `order`. Remove those checks and update the docs.
In `WP_Query`, if the value of `orderby` is `rand`, `order` is irrelevant and should be unset.
Adds unit tests.
Fixes#29629.
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