This reverts part of [34659] due to excessive canonical problems it's caused in 4.4.x.
Remove the unit tests which are no longer supported.
This also removes the `is_feed()` code to avoid confusion - only pages & embeds will be redirected.
Merges [36280] and [36281] to trunk.
Props dd32.
See #21602, #35344.
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`WP_Query` allows random ordering; `'orderby' => 'rand'` translates to
`ORDER BY RAND()`. This syntax results in random ordering that is not
consistent from request to request. MySQL supports the passing of a seed value
to random sorts, such as `ORDER BY RAND(3)`, which will return the same
random value each time it's called. `WP_Query` now supports this syntax, by
passing `RAND(3)` (or whatever integer seed value you'd like) as the value
of `'orderby'`.
Props hlashbrooke.
Fixes#35692.
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Another chapter in the Storied Annals of Weird `in_array()` Behavior:
`in_array( 4, array( "4-cool-dudes" ) );` resolves to `true`, such that
`is_page( 4 )` was returning true for posts with the name `'4-cool-dudes'`.
We work around this behavior by ensuring that values passed to the `is_`
methods are cast to strings before the `in_array()` checks. ID checks still
work as expected; see #24674.
Props mikejolley, swissspidy, boonebgorges.
Fixes#35902.
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Comment and term meta lazyloading for `WP_Query` loops, introduced in 4.4,
depended on filter callback methods belonging to `WP_Query` objects. This meant
storing `WP_Query` objects in the `$wp_filter` global (via `add_filter()`),
requiring that PHP retain the objects in memory, even when the local variables
would typically be expunged during normal garbage collection. In cases where a
large number of `WP_Query` objects were instantiated on a single pageload,
and/or where the contents of the `WP_Query` objects were quite large, serious
performance issues could result.
We skirt this problem by moving metadata lazyloading out of `WP_Query`. The
new `WP_Metadata_Lazyloader` class acts as a lazyload queue. Query instances
register items whose metadata should be lazyloaded - such as post terms, or
comments - and a `WP_Metadata_Lazyloader` method will intercept comment and
term meta requests to perform the cache priming. Since `WP_Metadata_Lazyloader`
instances are far smaller than `WP_Query` (containing only object IDs), and
clean up after themselves far better than the previous `WP_Query` methods (bp
only running their callbacks a single time for a given set of queued objects),
the resource use is decreased dramatically.
See [36525] for an earlier step in this direction.
Props lpawlik, stevegrunwell, boonebgorges.
Fixes#35816.
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Lazyloading for comment meta and term meta, introduced into `WP_Query` in
4.4, used flags - `updated_term_meta_cache` and `updated_comment_meta_cache` -
in an attempt to prevent cache priming from happening more than once per query
object. This technique was mostly effective, but not entirely efficient, since
the flag didn't prevent the `lazyload_*_meta` callbacks from running. The
obvious solution - removing the filter callback after it'd be run once - was
dismissed for 4.4 because of concerns that `remove_filter()` could disable
lazyloading too generally in the context of nested queries, due to the way
`_wp_filter_build_unique_id()` doesn't always build sufficiently unique IDs for
similar objects. However, further testing shows that this concern is only valid
in a very small subset of cases, while the cost of keeping the query objects in
memory, via the `$wp_filter` global, is quite significant. As such, this
changeset removes the flags in favor of the `remove_filter()` technique.
See #35454, #35816.
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This provides better parity with `get_queried_object()`, which will return the
first taxonomy/term matched by the current query.
[29891] introduced the abnormal behavior for the 'taxonomy' and 'term'
query vars.
Props Chouby.
Fixes#35619.
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The introduction of negative search terms in 4.4 [34934] introduced the
possibility that the ORDER BY clause of a search query could be assembled in
such a way as to create invalid syntax. The current changeset fixes this by
ensuring that the ORDER BY clause corresponding to the search terms is
excluded when it would otherwise be empty.
Props salvoaranzulla.
Fixes#35361.
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After [34659], it became possible to cause an incorrect redirect, by changing the slug of a post, then creating a new post with the old slug. The correct behaviour is to prevent redirecting to the old post.
Props dd32, pento.
Fixes#35031 for trunk.
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Twelve years later, after no fewer than three themes have intentionally implemented popup comments in their functionality, before being abandoned for at least the last six years, we've reached a time where we can put this era behind us. A time when we can remove comment popup functionality from WordPress.
If this breaks the internet, I'll eat my hat.
Fixes#28617
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Pass a keyword with a leading hyphen to exclude posts containing that keyword.
For example, 'taco -onions' will return posts that contain the word 'taco' but
do not contain the word 'onions'.
Props akibjorklund.
Fixes#33988.
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For the past 6 years, WordPress has operated as an oEmbed consumer, allowing users to easily embed content from other sites. By adding oEmbed provider support, this allows any oEmbed consumer to embed posts from WordPress sites.
In addition to creating an oEmbed provider, WordPress' oEmbed consumer code has been enhanced to work with any site that provides oEmbed data (as long as it matches some strict security rules), and provides a preview from within the post editor.
For security, embeds appear within a sandboxed iframe - the iframe content is a template that can be styled or replaced entirely by the theme on the provider site.
Props swissspidy, pento, melchoyce, netweb, pfefferle, johnbillion, extendwings, davidbinda, danielbachhuber, SergeyBiryukov, afercia
Fixes#32522.
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Lazy-loading logic is moved to a method on `WP_Query`. This makes it possible
for comment feeds to take advantage of metadata lazyloading, in addition to
comments loaded via `comments_template()`.
This new technique parallels the termmeta lazyloading technique introduced in
[34704].
Fixes#34047.
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[34529] introduced lazyloading for the metadata belonging to terms matching
posts in the main `WP_Query`. The current changeset improves this technique
in the following ways:
* Term meta lazyloading is now performed on the results of all `WP_Query` queries, not just the main query.
* Fewer global variable touches and greater encapsulation.
* The logic for looping through posts to identify terms is now only performed once per `WP_Query`.
Props dlh, boonebgorges.
See #34047.
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Previously, unattached attachments would have unsightly `/?attachment_id=1` URLs. As we've moved away from attachments being specifically attached to posts, instead being Media items, this has made the unattached URLs a more common occurrence.
We can breath easy once more, knowing that the world is a little bit safer from the horror of unnecessarily ugly URLs.
Props SergeyBiryukov, wonderboymusic, pento.
Fixes#1914.
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Historically, `wp_old_slug_redirect()` has only ever redirected the old slug of posts, it hasn't included URL endpoints, or worked with comment feed URLs. By adding support for these, we ensure a greater range of URLs aren't killed when the slug changes.
Props swissspdy.
Fixes#33920.
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