Introduce an `object_subtype` argument to the args array for `register_meta()` which can be used to limit meta registration to a single subtype (e.g. a custom post type or taxonomy, vs all posts or taxonomies).
Introduce `register_post_meta()` and `register_term_meta()` wrapper methods for `register_meta` to provide a convenient interface for the common case of registering meta for a specific taxonomy or post type. These methods work the way plugin developers have often expected `register_meta` to function, and should be used in place of direct `register_meta` where possible.
Props flixos90, tharsheblows, spacedmonkey.
Fixes#38323.
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The `meta_box_cb` argument was introduced in [25572] to allow plugin
authors to provide a custom callback for rendering their taxonomy's meta
box on the post edit screen. However, the routine used to handle the saving
of these custom taxonomy meta boxes was not customizable, but was instead
based simply on whether the taxonomy was hierarchicaly. See [13535].
The new `meta_box_sanitize_cb` argument defaults to the "tag" routine for
non-hierarchical taxonomies and the "category" routine for hierarchical ones,
thereby maintaining the current default behavior. Developers can override this
when the data passed from their `meta_box_cb` differs.
Props boonebgorges, ZaneMatthew, stephenharris.
Fixes#36514.
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[40514] introduced a bug that caused term queries to return some duplicates
when the `$taxonomies` array contained only taxonomies that were originally
registered with an `$args` array. We fix this bug by ensuring that
recursive `get_terms()` queries stop when all queried `$taxonomies` have
already been referenced.
Props bor0, atanasangelovdev.
Fixes#41010.
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This changeset addresses two related issues:
* When splitting shared terms from hierarchical taxonomies, the process of regenerating the taxonomy hierarchy (`_get_taxonomy_hierarchy()`) requires recursive calls to `get_terms()` in order to descend the tree. By waiting until all shared terms in a term group have been invalidated before regenerating their taxonomy hierarchies, we avoid certain race conditions.
* Previously, a coding error prevented single-term caches from being invalidated for children of split terms. This error dates from [31418].
See #37189.
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[7520] introduced an undocumented feature whereby developers could
register a custom taxonomy with an 'args' parameter, consisting of
an array of config params that, when present, override corresponding
params in the `$args` array passed to `wp_get_object_terms()` when
using that function to query for terms in the specified taxonomy.
The `wp_get_object_terms()` refactor in [38667] failed to respect
this secret covenant, and the current changeset atones for the
transgression.
Props danielbachhuber.
Fixes#40496.
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Prior to 4.7, term relationships - as set by `wp_set_object_terms()` or
`wp_remove_object_terms()` - did not affect the term query cache. The
introduction of the 'object_ids' parameter in 4.7 means that the query
cache must be aware of object-term relationships. As such, the
'last_changed' incrementor is now invalidated when term relationships
are modified.
This bug only reared its head when delaying term counting, because term
counting performs its own term query cache invalidation.
Props mboynes.
Fixes#40306.
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Prior to [38677], `get_term_by()` would always return false if
an empty string were passed as the queried 'name' or 'slug'. The
refactor to use `get_terms()` broke this behavior; inappropriately
imprecise `empty()` checks caused the 'name' or 'slug' clause to be
discarded altogether when fetching terms, resulting in an incorrect
term being returned from the function.
We fix the regression by special-casing truly empty values passed
to `get_term_by()`, and ensuring that `WP_Term_Query` is properly
able to handle `0` and `'0'` term queries.
Props sstoqnov.
Fixes#21760.
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Historically, it has been possible to call `get_term_by()` within
a 'get_terms' filter callback. Since `get_term_by()` was refactored
to use `get_terms()` internally [38677], callbacks of this nature
have resulted in infinite loops.
As a workaround, we introduce a 'suppress_filter' option to `get_terms()`,
and use it when calling the function from within `get_term_by()`.
Props ocean90.
See #21760.
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Terms with duplicate names are not allowed at the same level of a
taxonomy hierarchy. The name lookup introduced in [34809] did not
properly account for the 'parent' parameter, with the result that
the duplicate-name restriction was tighter than intended (terms
with duplicate names could not be created at different levels of
a single hierarchy).
Props mikejolley.
Fixes#39984.
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`wp_insert_term()` does not allow for terms with the same name to exist
at the same hierarchy level, unless the second term has a unique slug.
When this logic was refactored in [31792] and [34809], a bug was
introduced whereby it was possible to bypass the no-same-named-sibling
check in cases where the first term had a non-auto-generated slug
(ie, where the name was 'Foo' but the slug something other than 'foo',
such that the second term would get the non-matching slug 'foo').
This changeset fixes this issue by ensuring that the duplicate name
check runs both in cases where there's an actual slug clash *and* in
cases where no explicit `slug` has been provided to `wp_insert_term()`.
The result is a more reliable error condition:
`wp_insert_term( 'Foo' ... )` will always fail if there's a sibling
'Foo', regardless of the sibling's slug.
Props mikejolley.
See #39984.
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REST API endpoints for your WordPress content. These endpoints provide machine-readable external access to your WordPress site with a clear, standards-driven interface, allowing new and innovative apps for interacting with your site. These endpoints support all of the following:
- Posts: Read and write access to all post data, for all types of post-based data, including pages and media.
- Comments: Read and write access to all comment data. This includes pingbacks and trackbacks.
- Terms: Read and write access to all term data.
- Users: Read and write access to all user data. This includes public access to some data for post authors.
- Meta: Read and write access to metadata for posts, comments, terms, and users, on an opt-in basis from plugins.
- Settings: Read and write access to settings, on an opt-in basis from plugins and core. This enables API management of key site content values that are technically stored in options, such as site title and byline.
Love your REST API, WordPress! The infrastructure says, "Let's do lunch!" but the content API endpoints say, "You're paying!"
Props rmccue, rachelbaker, danielbachhuber, joehoyle, adamsilverstein, afurculita, ahmadawais, airesvsg, alisspers, antisilent, apokalyptik, artoliukkonen, attitude, boonebgorges, bradyvercher, brianhogg, caseypatrickdriscoll, chopinbach, chredd, christianesperar, chrisvanpatten, claudiolabarbera, claudiosmweb, cmmarslender, codebykat, coderkevin, codfish, codonnell822, daggerhart, danielpunkass, davidbhayes, delphinus, desrosj, dimadin, dotancohen, DrewAPicture, Dudo1985, duncanjbrown, eherman24, eivhyl, eliorivero, elyobo, en-alis, ericandrewlewis, ericpedia, evansobkowicz, fjarrett, frozzare, georgestephanis, greatislander, guavaworks, hideokamoto, hkdobrev, hubdotcom, hurtige, iandunn, ircrash, ironpaperweight, iseulde, Japh, jaredcobb, JDGrimes, jdolan, jdoubleu, jeremyfelt, jimt, jjeaton, jmusal, jnylen0, johanmynhardt, johnbillion, jonathanbardo, jorbin, joshkadis, JPry, jshreve, jtsternberg, JustinSainton, kacperszurek, kadamwhite, kalenjohnson, kellbot, kjbenk, kokarn, krogsgard, kuchenundkakao, kuldipem, kwight, lgedeon, lukepettway, mantismamita, markoheijnen, matrixik, mattheu, mauteri, maxcutler, mayukojpn, michael-arestad, miyauchi, mjbanks, modemlooper, mrbobbybryant, NateWr, nathanrice, netweb, NikV, nullvariable, oskosk, oso96_2000, oxymoron, pcfreak30, pento, peterwilsoncc, Pezzab, phh, pippinsplugins, pjgalbraith, pkevan, pollyplummer, pushred, quasel, QWp6t, schlessera, schrapel, Shelob9, shprink, simonlampen, Soean, solal, tapsboy, tfrommen, tharsheblows, thenbrent, tierra, tlovett1, tnegri, tobych, Toddses, toro_unit, traversal, vanillalounge, vishalkakadiya, wanecek, web2style, webbgaraget, websupporter, westonruter, whyisjake, wonderboymusic, wpsmith, xknown, zyphonic.
Fixes#38373.
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[38776] introduced a call to `get_term()` using only the term ID. This
causes problems in cases where shared terms have not been split. Since
we have the taxonomy available, there's no harm in passing it along to
`get_term()`.
Props dd32.
See #37291.
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Since [37573], `get_object_term_cache()` has expected term IDs to be
stored in the taxonomy relationship cache. The function would then
reach directly into the 'terms' cache to fetch the data corresponding
to a given term, before returning a `WP_Term` object. This caused
problems when, for one reason or another, term data was cached
inconsistently:
* If the 'terms' cache is empty for a given term ID, despite the earlier call to `_prime_term_caches()`, `get_term()` would return an error object.
* If the array of cached term IDs contains an invalid ID, `get_term()` would return an error object.
We avoid these errors by no longer touching the 'terms' cache directly,
but running term IDs through `get_term()` and allowing that function to
reference the cache (and database, as needed). If `get_term()` returns
an error object for any of the cached term IDs, `get_object_term_cache()`
will return that error object alone. This change ensures that upstream
functions, like `get_the_terms()`, return `WP_Error` objects in a
predictable fashion.
Props dd32, michalzuber.
Fixes#37291.
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This changes the global `$wp_taxonomies` to an array of `WP_Taxonomy ` objects. `WP_Taxonomy ` includes methods to handle rewrite rules and hooks.
Each taxonomy argument becomes a property of `WP_Taxonomy`. Introducing such a class makes further improvements in the future much more feasible.
Props boonebgorges for review.
Fixes#36224. See #36217.
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This introduces the singular `edit_term`, `delete_term`, and `assign_term` meta capabilities for terms, and switches the base capability name for tags from `manage_categories` to `manage_post_tags` and the corresponding `edit_post_tags`, `delete_post_tags`, and `assign_post_tags`.
All of these capabilities ultimately map to `manage_categories` so by default there is no change in the behaviour of the capabilities for categories, tags, or custom taxonomies. The `map_meta_cap` filter and the `capabilities` argument when registering a taxonomy now allow for control over editing, deleting, and assigning individual terms, as well as a separation of capabilities for tags from those of categories.
Fixes#35614
Props johnjamesjacoby for feedback
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`WP_Term_Query` already supports querying terms by 'slug', 'name', and 'term_taxonomy_id'. Its additional arguments allow us to generate nearly the same SQL queries as before.
This change has one yuge benefit: the term queries are now cached.
Add tests to increase coverage of `get_term_by()`.
Props spacedmonkey, boonebgorges, johnjamesjacoby, pento, ocean90.
Fixes#21760.
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The new 'object_ids' parameter for `WP_Term_Query` allows queries for
terms that "belong to" a given object. This change makes it possible
to use `WP_Term_Query` inside of `wp_get_object_terms()`, rather than
assembling a SQL query.
The refactor has a couple of benefits:
* Less redundancy.
* Better consistency in accepted arguments between the term query functions. See #31105.
* Less redundancy.
* Object term queries are now cached. The `get_object_term_cache()` cache remains, and will be a somewhat less fragile secondary cache in front of the query cache (which is subject to frequent invalidation).
* Less redundancy.
A small breaking change: Previously, if a non-hierarchical taxonomy had
terms that had a non-zero 'parent' (perhaps because of a direct SQL
query), `wp_get_object_terms()` would respect the 'parent' argument.
This is in contrast to `WP_Term_Query` and `get_terms()`, which have
always rejected 'parent' queries for non-hierarchical taxonomies. For
consistency, the behavior of `get_terms()` is being applied across the
board: passing 'parent' for a non-hierarchical taxonomy will result in
an empty result set (since the cached taxonomy hierarchy will be empty).
Props flixos90, boonebgorges.
See #37198.
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By adding the `$output` parameter to `get_attachment_taxonomies()`, the
function signature matches that of `get_object_taxonomies()`. The change
also allows for more consistent behavior when passing `output=objects`
to `get_object_taxonomies()` for the 'attachment' object type, since
the `$output` parameter is now passed through the function stack.
Props codemovement.pk.
See #37368.
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[37623] used the wrong parameter name (count=true instead of fields=count).
For greater flexibility and forward compatibility with other potential changes
to the return value of `get_terms()`, we now do a looser check: any non-array
value is excluded from the filter.
Fixes#36992.
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Use of the 'get_terms' filter was consolidated in [37572], with the
introduction of `WP_Term_Query`. At that time, the result of 'count=true'
queries began being filtered by 'get_terms'. This breaks existing 'get_terms'
callbacks, which often assume that the returned value will be an array or a
`WP_Error` object.
Props JustinSainton.
Fixes#36992.
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Prior to [37572], arguments passed to `get_terms()` were passed immediately
through `wp_parse_args()`, which made it possible to pass arguments as a
querystring (`hide_empty=0`) rather than an array
(`array( 'hide_empty' => false )`). [37572] moved default argument parsing
into `WP_Term_Query`, while assuming that arguments passed to `get_terms()`
would be formatted as an array.
To provide compatibility, we now parse all args passed to `get_terms()` into
an array before processing.
See #35381.
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Since [37573], object relationship caches (`{$taxonomy}_relationships`)
contain term IDs rather than term objects. See #36814. As such, it's no longer
necessary to clear these caches when a term is updated; none of the data that's
changed on update (name, description, count, etc) is stored in the relationship
cache.
Fixes#36251.
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Previously, objects containing all data about a term were stored in each
object's term cache. Besides being wasteful, this approach caused invalidation
issues, as when a modified term count required a flush for all objects
belonging to the term.
Backward compatibility is maintained for plugins that continue to put object
data directly into the `{$taxonomy}_relationships` cache bucket.
Fixes#36814.
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`WP_Term_Query` is modeled on existing query classes, such as those used
for comments and users. It provides a more consistent structure for generating
term queries, and should make it easier to add new functionality in the future.
Props flixos90, boonebgorges.
See #35381.
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[34529] introduced logic intended to prime the termmeta cache for certain
values of the `fields` parameter. There were a few bugs:
* The `all_with_object_id` param was misspelled.
* `term_id` was used instead of `ids`.
* The values being passed to `update_termmeta_cache()` in the case where `fields=ids` was not correct.
All of these would result in a failure to pre-fetch termmeta in some cases.
Props dlh.
Fixes#36932.
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Also use 'back-compat' in some inline comments where backward compatibility is the subject and shorthand feels more natural.
Note: 'backwards compatibility/compatibile' can also be considered correct, though it's primary seen in regular use in British English.
Props ocean90.
Fixes#36835.
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Known functions, classes, and methods are now auto-linked in Code Reference pages following #meta1483.
Note: Hook references are still linked via inline `@see` tags due to the unlikelihood of reliably matching for known hooks based on a RegEx pattern.
See #32246.
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The codex says that taxonomy names "should only contain lowercase letters and the underscore character", but that's not enforced. It's too late to enforce it, since some plugins haven't been following it and the official phpdoc doesn't mention this restriction.
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When querying for terms in hierarchical taxonomies, `get_terms()` initially
queries for all matching terms, and then trims the located results based on the
`$number` and `$offset` arguments passed to the function. See #8832. However,
a flaw in the original logic meant that results were failing to be trimmed
properly in cases where `$offset` exceeds the total number of matching terms;
in these cases, we should force an empty array.
Props danielbachhuber.
Fixes#35935.
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`get_terms()` has historically required that a taxonomy be specified when
querying terms. This requirement is related to the fact that terms could
formerly be shared between taxonomies, making `$taxonomies` critical for
disambiguation. Since terms can no longer be shared as of 4.4, it'
s desirable to be able to query for terms regardless of what taxonomy they're in.
Because it's now optional to pass taxonomies, it's no longer necessary to have
`$taxonomies` as the first (and required) parameter for `get_terms()`. The new
function signature is `get_terms( $args )`, where 'taxonomy' can (optionally) be
passed as part of the `$args` array. This syntax is more consistent with
functions like `get_users()` and `get_posts()`.
We've maintained backward compatibility by always giving precedence to the old
argument format. If a second parameter is detected, or if it's detected that
the first parameter is a list of taxonomy names rather than an `$args` array,
`get_terms()` will parse the function arguments in the legacy fashion.
Props flixos90, swissspidy, DrewAPicture, boonebgorges.
Fixes#35495.
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The `$orderby` parameter of `get_terms()` now accepts the following values,
related to term meta:
* 'meta_value'
* 'meta_value_num'
* the value of the `$meta_key` parameter
* any key from the `$meta_query` array
This brings order-by-meta support for terms in line with post, comment, and
user queries.
As a byproduct of these improvements, `$meta_key` and `$meta_value` parameters
have been introduced to `get_terms()`. They interact with `$meta_query` in the
same way as in `WP_Query` and other query classes.
Props jadpm, eherman24.
Fixes#34996.
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