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<title>[36316] trunk: Post Types: Introduce `unregister_post_type()`.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/36316">36316</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/36316","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>swissspidy</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-01-15 12:19:15 +0000 (Fri, 15 Jan 2016)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Post Types: Introduce `unregister_post_type()`.
This new function can be used to completely unregister non built-in post types.
Fixes <a href="https://core.trac.wordpress.org/ticket/14761">#14761</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescapabilitiesphp">trunk/src/wp-includes/capabilities.php</a></li>
<li><a href="#trunksrcwpincludespostphp">trunk/src/wp-includes/post.php</a></li>
<li><a href="#trunktestsphpunitincludesutilsphp">trunk/tests/phpunit/includes/utils.php</a></li>
<li><a href="#trunktestsphpunittestsposttypesphp">trunk/tests/phpunit/tests/post/types.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludescapabilitiesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/capabilities.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/capabilities.php 2016-01-15 11:53:29 UTC (rev 36315)
+++ trunk/src/wp-includes/capabilities.php 2016-01-15 12:19:15 UTC (rev 36316)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -16,6 +16,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 2.0.0
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @global array $post_type_meta_caps Used to get post type meta capabilities.
+ *
</ins><span class="cx" style="display: block; padding: 0 10px"> * @param string $cap Capability name.
</span><span class="cx" style="display: block; padding: 0 10px"> * @param int $user_id User ID.
</span><span class="cx" style="display: block; padding: 0 10px"> * @param int $object_id Optional. ID of the specific object to check against if `$cap` is a "meta" cap.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -377,7 +379,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> break;
</span><span class="cx" style="display: block; padding: 0 10px"> default:
</span><span class="cx" style="display: block; padding: 0 10px"> // Handle meta capabilities for custom post types.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $post_type_meta_caps = _post_type_meta_capabilities();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ global $post_type_meta_caps;
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( isset( $post_type_meta_caps[ $cap ] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $args = array_merge( array( $post_type_meta_caps[ $cap ], $user_id ), $args );
</span><span class="cx" style="display: block; padding: 0 10px"> return call_user_func_array( 'map_meta_cap', $args );
</span></span></pre></div>
<a id="trunksrcwpincludespostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/post.php 2016-01-15 11:53:29 UTC (rev 36315)
+++ trunk/src/wp-includes/post.php 2016-01-15 12:19:15 UTC (rev 36316)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1187,6 +1187,88 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Unregister a post type.
+ *
+ * Can not be used to unregister built-in post types.
+ *
+ * @since 4.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
+ * @global WP $wp Current WordPress environment instance.
+ * @global array $_wp_post_type_features Used to remove post type features.
+ * @global array $post_type_meta_caps Used to remove meta capabilities.
+ * @global array $wp_post_types List of post types.
+ *
+ * @param string $post_type Post type key.
+ * @return bool|WP_Error True on success, WP_Error on failure.
+ */
+function unregister_post_type( $post_type ) {
+ if ( ! post_type_exists( $post_type ) ) {
+ return new WP_Error( 'invalid_post_type', __( 'Invalid post type' ) );
+ }
+
+ $post_type_args = get_post_type_object( $post_type );
+
+ // Do not allow unregistering internal post types.
+ if ( $post_type_args->_builtin ) {
+ return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
+ }
+
+ global $wp, $wp_rewrite, $_wp_post_type_features, $post_type_meta_caps, $wp_post_types;
+
+ // Remove query var.
+ if ( false !== $post_type_args->query_var ) {
+ $wp->remove_query_var( $post_type_args->query_var );
+ }
+
+ // Remove any rewrite rules, permastructs, and rules.
+ if ( false !== $post_type_args->rewrite ) {
+ remove_rewrite_tag( "%$post_type%" );
+ remove_permastruct( $post_type );
+ foreach ( $wp_rewrite->extra_rules_top as $regex => $query ) {
+ if ( false !== strpos( $query, "index.php?post_type=$post_type" ) ) {
+ unset( $wp_rewrite->extra_rules_top[ $regex ] );
+ }
+ }
+ }
+
+ // Remove registered custom meta capabilities.
+ foreach ( $post_type_args->cap as $cap ) {
+ unset( $post_type_meta_caps[ $cap ] );
+ }
+
+ // Remove all post type support.
+ unset( $_wp_post_type_features[ $post_type ] );
+
+ // Unregister the post type meta box if a custom callback was specified.
+ if ( $post_type_args->register_meta_box_cb ) {
+ remove_action( 'add_meta_boxes_' . $post_type, $post_type_args->register_meta_box_cb );
+ }
+
+ // Remove the post type from all taxonomies.
+ foreach ( get_object_taxonomies( $post_type ) as $taxonomy ) {
+ unregister_taxonomy_for_object_type( $taxonomy, $post_type );
+ }
+
+ // Remove the future post hook action.
+ remove_action( 'future_' . $post_type, '_future_post_hook', 5 );
+
+ // Remove the post type.
+ unset( $wp_post_types[ $post_type ] );
+
+ /**
+ * Fires after a post type was unregistered.
+ *
+ * @since 4.5.0
+ *
+ * @param string $post_type Post type key.
+ */
+ do_action( 'unregistered_post_type', $post_type );
+
+ return true;
+}
+
+/**
</ins><span class="cx" style="display: block; padding: 0 10px"> * Build an object with all post type capabilities out of a post type object
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * Post type capabilities use the 'capability_type' argument as a base, if the
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1293,17 +1375,17 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 3.1.0
</span><span class="cx" style="display: block; padding: 0 10px"> * @access private
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * @staticvar array $meta_caps
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @global array $post_type_meta_caps Used to store meta capabilities.
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * @param array|void $capabilities Post type meta capabilities.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @param array $capabilities Post type meta capabilities.
</ins><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> function _post_type_meta_capabilities( $capabilities = null ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- static $meta_caps = array();
- if ( null === $capabilities )
- return $meta_caps;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ global $post_type_meta_caps;
+
</ins><span class="cx" style="display: block; padding: 0 10px"> foreach ( $capabilities as $core => $custom ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) )
- $meta_caps[ $custom ] = $core;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) ) {
+ $post_type_meta_caps[ $custom ] = $core;
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span></span></pre></div>
<a id="trunktestsphpunitincludesutilsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/includes/utils.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/utils.php 2016-01-15 11:53:29 UTC (rev 36315)
+++ trunk/tests/phpunit/includes/utils.php 2016-01-15 12:19:15 UTC (rev 36316)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -335,14 +335,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Removes the post type and its taxonomy associations.
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> function _unregister_post_type( $cpt_name ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- unset( $GLOBALS['wp_post_types'][ $cpt_name ] );
- unset( $GLOBALS['_wp_post_type_features'][ $cpt_name ] );
-
- foreach ( $GLOBALS['wp_taxonomies'] as $taxonomy ) {
- if ( false !== $key = array_search( $cpt_name, $taxonomy->object_type ) ) {
- unset( $taxonomy->object_type[$key] );
- }
- }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ unregister_post_type( $cpt_name );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> function _unregister_taxonomy( $taxonomy_name ) {
</span></span></pre></div>
<a id="trunktestsphpunittestsposttypesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/post/types.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/post/types.php 2016-01-15 11:53:29 UTC (rev 36315)
+++ trunk/tests/phpunit/tests/post/types.php 2016-01-15 12:19:15 UTC (rev 36316)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -159,4 +159,224 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> _unregister_post_type( 'foo' );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type() {
+ register_post_type( 'foo' );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_unknown_post_type() {
+ $this->assertWPError( unregister_post_type( 'foo' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_twice() {
+ register_post_type( 'foo' );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertWPError( unregister_post_type( 'foo' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_disallow_builtin_post_type() {
+ $this->assertWPError( unregister_post_type( 'post' ) );
+ $this->assertWPError( unregister_post_type( 'page' ) );
+ $this->assertWPError( unregister_post_type( 'attachment' ) );
+ $this->assertWPError( unregister_post_type( 'revision' ) );
+ $this->assertWPError( unregister_post_type( 'nav_menu_item' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_query_vars() {
+ global $wp;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'query_var' => 'bar',
+ ) );
+
+ $this->assertInternalType( 'int', array_search( 'bar', $wp->public_query_vars ) );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertFalse( array_search( 'bar', $wp->public_query_vars ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_rewrite_tags() {
+ $this->set_permalink_structure( '/%postname%' );
+
+ global $wp_rewrite;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'query_var' => 'bar',
+ ) );
+
+ $count_before = count( $wp_rewrite->rewritereplace );
+
+ $this->assertContains( '%foo%', $wp_rewrite->rewritecode );
+ $this->assertContains( 'bar=', $wp_rewrite->queryreplace );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertNotContains( '%foo%', $wp_rewrite->rewritecode );
+ $this->assertNotContains( 'bar=', $wp_rewrite->queryreplace );
+ $this->assertSame( -- $count_before, count( $wp_rewrite->rewritereplace ) ); // Array was reduced by one value.
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_rewrite_rules() {
+ $this->set_permalink_structure( '/%postname%' );
+
+ global $wp_rewrite;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'has_archive' => true,
+ ) );
+
+ $this->assertContains( 'index.php?post_type=foo', $wp_rewrite->extra_rules_top );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertNotContains( 'index.php?post_type=foo', $wp_rewrite->extra_rules_top );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_custom_meta_capabilities() {
+ global $post_type_meta_caps;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'capability_type' => 'bar',
+ 'map_meta_cap' => true,
+ ) );
+
+ $this->assertSame( 'read_post', $post_type_meta_caps['read_bar'] );
+ $this->assertSame( 'delete_post', $post_type_meta_caps['delete_bar'] );
+ $this->assertSame( 'edit_post', $post_type_meta_caps['edit_bar'] );
+
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+
+ $this->assertFalse( isset( $post_type_meta_caps['read_bar'] ) );
+ $this->assertFalse( isset( $post_type_meta_caps['delete_bar'] ) );
+ $this->assertFalse( isset( $post_type_meta_caps['edit_bar'] ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_post_type_supports() {
+ global $_wp_post_type_features;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'supports' => array( 'editor', 'author', 'title' ),
+ ) );
+
+ $this->assertEqualSetsWithIndex(
+ array(
+ 'editor' => true,
+ 'author' => true,
+ 'title' => true,
+ ),
+ $_wp_post_type_features['foo']
+ );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertFalse( isset( $_wp_post_type_features['foo'] ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_post_type_from_taxonomies() {
+ global $wp_taxonomies;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'taxonomies' => array( 'category', 'post_tag' ),
+ ) );
+
+ $this->assertInternalType( 'int', array_search( 'foo', $wp_taxonomies['category']->object_type, true ) );
+ $this->assertInternalType( 'int', array_search( 'foo', $wp_taxonomies['post_tag']->object_type, true ) );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertFalse( array_search( 'foo', $wp_taxonomies['category']->object_type, true ) );
+ $this->assertFalse( array_search( 'foo', $wp_taxonomies['post_tag']->object_type, true ) );
+ $this->assertEmpty( get_object_taxonomies( 'foo' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_the_future_post_hooks() {
+ global $wp_filter;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ ) );
+
+ $this->assertSame( 1, count( $wp_filter['future_foo'] ) );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertSame( array(), $wp_filter['future_foo'] );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_meta_box_callback() {
+ global $wp_filter;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ 'register_meta_box_cb' => '__return_empty_string',
+ ) );
+
+ $this->assertSame( 1, count( $wp_filter['add_meta_boxes_foo'] ) );
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+ $this->assertSame( array(), $wp_filter['add_meta_boxes_foo'] );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_unregister_post_type_removes_post_type_from_global() {
+ global $wp_post_types;
+
+ register_post_type( 'foo', array(
+ 'public' => true,
+ ) );
+
+ $this->assertInternalType( 'object', $wp_post_types['foo'] );
+ $this->assertInternalType( 'object', get_post_type_object( 'foo' ) );
+
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+
+ $this->assertFalse( isset( $wp_post_types['foo'] ) );
+ $this->assertNull( get_post_type_object( 'foo' ) );
+ }
+
+ /**
+ * @ticket 14761
+ */
+ public function test_post_type_does_not_exist_after_unregister_post_type() {
+ register_post_type( 'foo', array(
+ 'public' => true,
+ ) );
+
+ $this->assertTrue( unregister_post_type( 'foo' ) );
+
+ $this->assertFalse( post_type_exists( 'foo' ) );
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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