Ticket #5809: 5809.2.diff

src/wp-includes/default-filters.php

@@ -306 +306 @@
 add_filter( 'determine_current_user', 'wp_validate_auth_cookie'          );
 add_filter( 'determine_current_user', 'wp_validate_logged_in_cookie', 20 );
 
+// Split term updates.
+add_action( 'split_shared_term', '_wp_check_split_default_terms',  10, 4 );
+add_action( 'split_shared_term', '_wp_check_split_terms_in_menus', 10, 4 );
+
 /**
  * Filters formerly mixed into wp-includes
  */

src/wp-includes/taxonomy.php

@@ -3421 +3421 @@
 
         $tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id) );
 
+        // Check whether this is a shared term that needs splitting.
+        $_term_id = _split_shared_term( $term_id, $tt_id );
+        if ( ! is_wp_error( $_term_id ) ) {
+                $term_id = $_term_id;
+        }
+
         /**
          * Fires immediately before the given terms are edited.
          *
@@ -4083 +4089 @@
 }
 
 /**
+ * Create a new term for a term_taxonomy item that currently shares its term.
+ *
+ * @since 4.2.0
+ * @access private
+ *
+ * @param int   $term_id          ID of the shared term.
+ * @param int   $term_taxonomy_id ID of the term taxonomy item to receive a new term.
+ * @param array $shared_tts       Sibling term taxonomies, used for busting caches.
+ * @return int  Term ID.
+ */
+function _split_shared_term( $term_id, $term_taxonomy_id ) {
+        global $wpdb;
+
+        // Don't try to split terms if database schema does not support shared slugs.
+        $current_db_version = get_option( 'db_version' );
+        if ( $current_db_version < 30133 ) {
+                return $term_id;
+        }
+
+        // If there are no shared term_taxonomy rows, there's nothing to do here.
+        $shared_tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy tt WHERE tt.term_id = %d AND tt.term_taxonomy_id != %d", $term_id, $term_taxonomy_id ) );
+        if ( ! $shared_tt_count ) {
+                return $term_id;
+        }
+
+        // Pull up data about the currently shared slug, which we'll use to populate the new one.
+        $shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) );
+
+        $new_term_data = array(
+                'name' => $shared_term->name,
+                'slug' => $shared_term->slug,
+                'term_group' => $shared_term->term_group,
+        );
+
+        if ( false === $wpdb->insert( $wpdb->terms, $new_term_data ) ) {
+                return new WP_Error( 'db_insert_error', __( 'Could not split shared term.' ), $wpdb->last_error );
+        }
+
+        $new_term_id = (int) $wpdb->insert_id;
+
+        // Update the existing term_taxonomy to point to the newly created term.
+        $wpdb->update( $wpdb->term_taxonomy,
+                array( 'term_id' => $new_term_id ),
+                array( 'term_taxonomy_id' => $term_taxonomy_id )
+        );
+
+        // Reassign child terms to the new parent.
+        $term_taxonomy = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) );
+        $children_tt_ids = $wpdb->get_col( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE taxonomy = %s AND parent = %d", $term_taxonomy->taxonomy, $term_id ) );
+
+        if ( ! empty( $children_tt_ids ) ) {
+                foreach ( $children_tt_ids as $child_tt_id ) {
+                        $wpdb->update( $wpdb->term_taxonomy,
+                                array( 'parent' => $new_term_id ),
+                                array( 'term_taxonomy_id' => $child_tt_id )
+                        );
+                        clean_term_cache( $term_id, $term_taxonomy->taxonomy );
+                }
+        } else {
+                // If the term has no children, we must force its taxonomy cache to be rebuilt separately.
+                clean_term_cache( $new_term_id, $term_taxonomy->taxonomy );
+        }
+
+        // Clean the cache for term taxonomies formerly shared with the current term.
+        $shared_term_taxonomies = $wpdb->get_row( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) );
+        foreach ( (array) $shared_term_taxonomies as $shared_term_taxonomy ) {
+                clean_term_cache( $term_id, $shared_term_taxonomy );
+        }
+
+        // Keep a record of term_ids that have been split, keyed by old term_id.
+        $split_term_data = get_option( '_split_terms', array() );
+        if ( ! isset( $split_term_data[ $term_id ] ) ) {
+                $split_term_data[ $term_id ] = array();
+        }
+
+        $split_term_data[ $term_id ][ $term_taxonomy->taxonomy ] = $new_term_id;
+
+        update_option( '_split_terms', $split_term_data );
+
+        /**
+         * Fires after a previously shared taxonomy term is split into two separate terms.
+         *
+         * @since 4.2.0
+         *
+         * @param int    $term_id          ID of the formerly shared term.
+         * @param int    $new_term_id      ID of the new term created for the $term_taxonomy_id.
+         * @param int    $term_taxonomy_id ID for the term_taxonomy row affected by the split.
+         * @param string $taxonomy         Taxonomy for the split term.
+         */
+        do_action( 'split_shared_term', $term_id, $new_term_id, $term_taxonomy_id, $term_taxonomy->taxonomy );
+
+        return $new_term_id;
+}
+
+/**
+ * Check default categories when a term gets split to see if any of them need
+ * to be updated.
+ *
+ * @since 4.2.0
+ * @access private
+ *
+ * @param int    $term_id          ID of the formerly shared term.
+ * @param int    $new_term_id      ID of the new term created for the $term_taxonomy_id.
+ * @param int    $term_taxonomy_id ID for the term_taxonomy row affected by the split.
+ * @param string $taxonomy         Taxonomy for the split term.
+ */
+function _wp_check_split_default_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {
+        if ( 'category' == $taxonomy ) {
+                foreach ( array( 'default_category', 'default_link_category', 'default_email_category' ) as $option ) {
+                        if ( $term_id == get_option( $option, -1 ) ) {
+                                update_option( $option, $new_term_id );
+                        }
+                }
+        }
+}
+
+/**
+ * Check menu items when a term gets split to see if any of them need to be
+ * updated.
+ *
+ * @since 4.2.0
+ * @access private
+ *
+ * @param int    $term_id          ID of the formerly shared term.
+ * @param int    $new_term_id      ID of the new term created for the $term_taxonomy_id.
+ * @param int    $term_taxonomy_id ID for the term_taxonomy row affected by the split.
+ * @param string $taxonomy         Taxonomy for the split term.
+ */
+function _wp_check_split_terms_in_menus( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {
+        global $wpdb;
+        $post_ids = $wpdb->get_col( $wpdb->prepare(
+                "SELECT m1.post_id
+                FROM {$wpdb->postmeta} AS m1
+                        INNER JOIN {$wpdb->postmeta} AS m2 ON m2.post_id=m1.post_id
+                        INNER JOIN {$wpdb->postmeta} AS m3 ON m3.post_id=m1.post_id
+                WHERE ( m1.meta_key = '_menu_item_type' AND m1.meta_value = 'taxonomy' )
+                        AND ( m2.meta_key = '_menu_item_object' AND m2.meta_value = '%s' )
+                        AND ( m3.meta_key = '_menu_item_object_id' AND m3.meta_value = %d )",
+                $taxonomy,
+                $term_id
+        ) );
+
+        if ( $post_ids ) {
+                foreach ( $post_ids as $post_id ) {
+                        update_post_meta( $post_id, '_menu_item_object_id', $new_term_id, $term_id );
+                }
+        }
+}
+
+/**
+ * Get data about terms that previous shared a single term_id, but have since been split.
+ *
+ * @since 4.2.0
+ *
+ * @param int $old_term_id Term ID. This is the old, pre-split term ID.
+ * @return array Array of new term IDs, keyed by taxonomy.
+ */
+function wp_get_split_terms( $old_term_id ) {
+        $split_terms = get_option( '_split_terms', array() );
+
+        $terms = array();
+        if ( isset( $split_terms[ $old_term_id ] ) ) {
+                $terms = $split_terms[ $old_term_id ];
+        }
+
+        return $terms;
+}
+
+/**
+ * Get the new term ID corresponding to a previously split term.
+ *
+ * @since 4.2.0
+ *
+ * @param int    $old_term_id Term ID. This is the old, pre-split term ID.
+ * @param string $taxonomy    Taxonomy that the term belongs to.
+ * @return bool|int If a previously split term is found corresponding to the old term_id and taxonomy, the new term_id
+ *                  will be returned. If no previously split term is found matching the parameters, returns false.
+ */
+function wp_get_split_term( $old_term_id, $taxonomy ) {
+        $split_terms = wp_get_split_terms( $old_term_id );
+
+        $term_id = false;
+        if ( isset( $split_terms[ $taxonomy ] ) ) {
+                $term_id = (int) $split_terms[ $taxonomy ];
+        }
+
+        return $term_id;
+}
+
+/**
  * Generate a permalink for a taxonomy term archive.
  *
  * @since 2.5.0

tests/phpunit/tests/term.php

@@ -760 +760 @@
                 $this->assertSame( 'Bar', $t3_term->name );
         }
 
+        /**
+         * @ticket 5809
+         */
+        public function test_wp_update_term_should_split_shared_term() {
+                global $wpdb;
+
+                register_taxonomy( 'wptests_tax', 'post' );
+                register_taxonomy( 'wptests_tax_2', 'post' );
+
+                $t1 = wp_insert_term( 'Foo', 'wptests_tax' );
+                $t2 = wp_insert_term( 'Foo', 'wptests_tax_2' );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t2['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $posts = $this->factory->post->create_many( 2 );
+                wp_set_object_terms( $posts[0], array( 'Foo' ), 'wptests_tax' );
+                wp_set_object_terms( $posts[1], array( 'Foo' ), 'wptests_tax_2' );
+
+                // Verify that the terms are shared.
+                $t1_terms = wp_get_object_terms( $posts[0], 'wptests_tax' );
+                $t2_terms = wp_get_object_terms( $posts[1], 'wptests_tax_2' );
+                $this->assertSame( $t1_terms[0]->term_id, $t2_terms[0]->term_id );
+
+                wp_update_term( $t2_terms[0]->term_id, 'wptests_tax_2', array(
+                        'name' => 'New Foo',
+                ) );
+
+                $t1_terms = wp_get_object_terms( $posts[0], 'wptests_tax' );
+                $t2_terms = wp_get_object_terms( $posts[1], 'wptests_tax_2' );
+                $this->assertNotEquals( $t1_terms[0]->term_id, $t2_terms[0]->term_id );
+        }
+
+        /**
+         * @ticket 5809
+         */
+        public function test_wp_update_term_should_not_split_shared_term_before_410_schema_change() {
+                global $wpdb;
+
+                $db_version = get_option( 'db_version' );
+                update_option( 'db_version', 30055 );
+
+                register_taxonomy( 'wptests_tax', 'post' );
+                register_taxonomy( 'wptests_tax_2', 'post' );
+
+                $t1 = wp_insert_term( 'Foo', 'wptests_tax' );
+                $t2 = wp_insert_term( 'Foo', 'wptests_tax_2' );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t2['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $posts = $this->factory->post->create_many( 2 );
+                wp_set_object_terms( $posts[0], array( 'Foo' ), 'wptests_tax' );
+                wp_set_object_terms( $posts[1], array( 'Foo' ), 'wptests_tax_2' );
+
+                // Verify that the term is shared.
+                $t1_terms = wp_get_object_terms( $posts[0], 'wptests_tax' );
+                $t2_terms = wp_get_object_terms( $posts[1], 'wptests_tax_2' );
+                $this->assertSame( $t1_terms[0]->term_id, $t2_terms[0]->term_id );
+
+                wp_update_term( $t2_terms[0]->term_id, 'wptests_tax_2', array(
+                        'name' => 'New Foo',
+                ) );
+
+                // Term should still be shared.
+                $t1_terms = wp_get_object_terms( $posts[0], 'wptests_tax' );
+                $t2_terms = wp_get_object_terms( $posts[1], 'wptests_tax_2' );
+                $this->assertSame( $t1_terms[0]->term_id, $t2_terms[0]->term_id );
+
+                update_option( 'db_version', $db_version );
+        }
+
         public function test_wp_update_term_alias_of_no_term_group() {
                 register_taxonomy( 'wptests_tax', 'post' );
                 $t1 = $this->factory->term->create( array(

new file tests/phpunit/tests/term/splitSharedTerm.php

@@ +1 @@
+<?php
+
+/**
+ * @group taxonomy
+ */
+class Tests_Term_SplitSharedTerm extends WP_UnitTestCase {
+        protected $terms = array();
+
+        public function setUp() {
+                global $wpdb;
+
+                parent::setUp();
+
+                register_taxonomy( 'wptests_tax', 'post' );
+                register_taxonomy( 'wptests_tax_2', 'post', array(
+                        'hierarchical' => true,
+                ) );
+                register_taxonomy( 'wptests_tax_3', 'post' );
+
+                $t1 = wp_insert_term( 'Foo', 'wptests_tax' );
+                $t2 = wp_insert_term( 'Foo', 'wptests_tax_2' );
+                $t3 = wp_insert_term( 'Foo', 'wptests_tax_3' );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t2['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t3['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $t2_child = wp_insert_term( 'Foo Child', 'wptests_tax_2', array(
+                        'parent' => $t1['term_id'],
+                ) );
+
+                $this->terms = array(
+                        't1' => $t1,
+                        't2' => $t2,
+                        't3' => $t3,
+                        't2_child' => $t2_child,
+                );
+
+                _split_shared_term( $t1['term_id'], $t2['term_taxonomy_id'] );
+                _split_shared_term( $t1['term_id'], $t3['term_taxonomy_id'] );
+        }
+
+        /**
+         * @ticket 5809
+         */
+        public function test_should_create_new_term_ids() {
+                $t1_term = get_term_by( 'term_taxonomy_id', $this->terms['t1']['term_taxonomy_id'], 'wptests_tax' );
+                $t2_term = get_term_by( 'term_taxonomy_id', $this->terms['t2']['term_taxonomy_id'], 'wptests_tax_2' );
+                $t3_term = get_term_by( 'term_taxonomy_id', $this->terms['t3']['term_taxonomy_id'], 'wptests_tax_3' );
+
+                $this->assertNotEquals( $t1_term->term_id, $t2_term->term_id );
+                $this->assertNotEquals( $t1_term->term_id, $t3_term->term_id );
+                $this->assertNotEquals( $t2_term->term_id, $t3_term->term_id );
+        }
+
+        /**
+         * @ticket 5809
+         */
+        public function test_should_retain_child_terms_when_using_get_terms_parent() {
+                $t2_term = get_term_by( 'term_taxonomy_id', $this->terms['t2']['term_taxonomy_id'], 'wptests_tax_2' );
+                $children = get_terms( 'wptests_tax_2', array(
+                        'parent' => $t2_term->term_id,
+                        'hide_empty' => false,
+                ) );
+
+                $this->assertEquals( $this->terms['t2_child']['term_taxonomy_id'], $children[0]->term_taxonomy_id );
+        }
+
+        /**
+         * @ticket 5809
+         */
+        public function test_should_retain_child_terms_when_using_get_terms_child_of() {
+                $t2_term = get_term_by( 'term_taxonomy_id', $this->terms['t2']['term_taxonomy_id'], 'wptests_tax_2' );
+                $children = get_terms( 'wptests_tax_2', array(
+                        'child_of' => $t2_term->term_id,
+                        'hide_empty' => false,
+                ) );
+
+                $this->assertEquals( $this->terms['t2_child']['term_taxonomy_id'], $children[0]->term_taxonomy_id );
+        }
+
+        /**
+         * @ticket 30335
+         */
+        public function test_should_rebuild_split_term_taxonomy_hierarchy() {
+                global $wpdb;
+
+                register_taxonomy( 'wptests_tax_3', 'post' );
+                register_taxonomy( 'wptests_tax_4', 'post', array(
+                        'hierarchical' => true,
+                ) );
+
+                $t1 = wp_insert_term( 'Foo1', 'wptests_tax_3' );
+                $t2 = wp_insert_term( 'Foo1 Parent', 'wptests_tax_4' );
+                $t3 = wp_insert_term( 'Foo1', 'wptests_tax_4', array(
+                        'parent' => $t2['term_id'],
+                ) );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t3['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+                $th = _get_term_hierarchy( 'wptests_tax_4' );
+
+                $new_term_id = _split_shared_term( $t1['term_id'], $t3['term_taxonomy_id'] );
+
+                $t2_children = get_term_children( $t2['term_id'], 'wptests_tax_4' );
+                $this->assertEquals( array( $new_term_id ), $t2_children );
+        }
+
+        /**
+         * @ticket 30335
+         */
+        public function test_should_update_default_category_on_term_split() {
+                global $wpdb;
+                $t1 = wp_insert_term( 'Foo Default', 'category' );
+
+                update_option( 'default_category', $t1['term_id'] );
+
+                register_taxonomy( 'wptests_tax_5', 'post' );
+                $t2 = wp_insert_term( 'Foo Default', 'wptests_tax_5' );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t2['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $this->assertEquals( $t1['term_id'], get_option( 'default_category', -1 ) );
+
+                $new_term_id = _split_shared_term( $t1['term_id'], $t1['term_taxonomy_id'] );
+
+                $this->assertNotEquals( $new_term_id, $t1['term_id'] );
+                $this->assertEquals( $new_term_id, get_option( 'default_category', -1 ) );
+        }
+
+        /**
+         * @ticket 30335
+         */
+        public function test_should_update_menus_on_term_split() {
+                global $wpdb;
+
+                $t1 = wp_insert_term( 'Foo Menu', 'category' );
+
+                register_taxonomy( 'wptests_tax_6', 'post' );
+                $t2 = wp_insert_term( 'Foo Menu', 'wptests_tax_6' );
+
+                // Manually modify because split terms shouldn't naturally occur.
+                $wpdb->update( $wpdb->term_taxonomy,
+                        array( 'term_id' => $t1['term_id'] ),
+                        array( 'term_taxonomy_id' => $t2['term_taxonomy_id'] ),
+                        array( '%d' ),
+                        array( '%d' )
+                );
+
+                $menu_id = wp_create_nav_menu( rand_str() );
+                $cat_menu_item = wp_update_nav_menu_item( $menu_id, 0, array(
+                        'menu-item-type' => 'taxonomy',
+                        'menu-item-object' => 'category',
+                        'menu-item-object-id' => $t1['term_id'],
+                        'menu-item-status' => 'publish'
+                ) );
+                $this->assertEquals( $t1['term_id'], get_post_meta( $cat_menu_item, '_menu_item_object_id', true ) );
+
+                $new_term_id = _split_shared_term( $t1['term_id'], $t1['term_taxonomy_id'] );
+                $this->assertNotEquals( $new_term_id, $t1['term_id'] );
+                $this->assertEquals( $new_term_id, get_post_meta( $cat_menu_item, '_menu_item_object_id', true ) );
+        }
+
+        public function test_wp_get_split_terms() {
+                $found = wp_get_split_terms( $this->terms['t1']['term_id'] );
+
+                // Pull up the fresh terms to get post-split term_ids.
+                $term_2 = get_term_by( 'term_taxonomy_id', $this->terms['t2']['term_taxonomy_id'], 'wptests_tax_2' );
+                $term_3 = get_term_by( 'term_taxonomy_id', $this->terms['t3']['term_taxonomy_id'], 'wptests_tax_3' );
+                $expected = array(
+                        'wptests_tax_2' => $term_2->term_id,
+                        'wptests_tax_3' => $term_3->term_id,
+                );
+
+                $this->assertEqualSets( $expected, $found );
+        }
+
+        public function test_wp_get_split_term() {
+                $found = wp_get_split_term( $this->terms['t1']['term_id'], 'wptests_tax_3' );
+
+                // Pull up the fresh term to get post-split term_ids.
+                $term_3 = get_term_by( 'term_taxonomy_id', $this->terms['t3']['term_taxonomy_id'], 'wptests_tax_3' );
+
+                $this->assertEquals( $term_3->term_id, $found );
+        }
+}