Changeset 30240 for trunk/src/wp-includes/taxonomy.php

Timestamp:

11/05/2014 01:41:58 AM (12 years ago)

Author:

boonebgorges

Message:

Do not create shared taxonomy terms.

A "shared" term occurs when two entries in the wp_term_taxonomy table share a
single term_id, and thereby correspond to the same row in wp_terms. This
changeset stops the practice of creating shared terms: each new row in
wp_term_taxonomy will receive its own row in wp_terms. The new strategy
for term creation depends on whether the installation's database schema is up
to date for 4.1:

• If so, terms are allowed to be created with the same slug as an existing term, as long as they are in different taxonomies and do not share a parent. Thus, a new tag with the slug 'wordpress' can exist alongside a category with the slug 'wordpress'.
• If not, new terms will be forced to have unique slugs. Thus, on an installation containing a category with the slug 'wordpress', a new tag 'WordPress' will get the slug 'wordpress-2'.

Fixes #21950. See #5809.

File:

• trunk/src/wp-includes/taxonomy.php (modified) (2 diffs)

trunk/src/wp-includes/taxonomy.php

@@ -2846 +2846 @@
         }
 
-        if ( $term_id = term_exists($slug) ) {
-                $existing_term = $wpdb->get_row( $wpdb->prepare( "SELECT name FROM $wpdb->terms WHERE term_id = %d", $term_id), ARRAY_A );
-                // We've got an existing term in the same taxonomy, which matches the name of the new term:
-                if ( is_taxonomy_hierarchical($taxonomy) && $existing_term['name'] == $name && $exists = term_exists( (int) $term_id, $taxonomy ) ) {
-                        // Hierarchical, and it matches an existing term, Do not allow same "name" in the same level.
-                        $siblings = get_terms($taxonomy, array('fields' => 'names', 'get' => 'all', 'parent' => $parent ) );
-                        if ( in_array($name, $siblings) ) {
-                                if ( $slug_provided ) {
-                                        return new WP_Error( 'term_exists', __( 'A term with the name and slug provided already exists with this parent.' ), $exists['term_id'] );
-                                } else {
-                                        return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $exists['term_id'] );
+        // Terms with duplicate names are not allowed at the same level of a taxonomy hierarchy.
+        if ( $exists = term_exists( $slug, $taxonomy ) ) {
+                $existing_term = get_term( $exists['term_id'], $taxonomy );
+
+                if ( $name === $existing_term->name ) {
+
+                        if ( is_taxonomy_hierarchical( $taxonomy ) ) {
+                                $siblings = get_terms( $taxonomy, array( 'fields' => 'names', 'get' => 'all', 'parent' => $parent ) );
+                                if ( in_array( $name, $siblings ) ) {
+                                        return new WP_Error( 'term_exists', __( 'A term with the name and slug already exists with this parent.' ), $exists['term_id'] );
                                 }
+
                         } else {
-                                $slug = wp_unique_term_slug($slug, (object) $args);
-                                if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) {
-                                        return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
-                                }
-                                $term_id = (int) $wpdb->insert_id;
+                                return new WP_Error( 'term_exists', __( 'A term with the name and slug already exists in this taxonomy.' ), $exists['term_id'] );
                         }
-                } elseif ( $existing_term['name'] != $name ) {
-                        // We've got an existing term, with a different name, Create the new term.
-                        $slug = wp_unique_term_slug($slug, (object) $args);
-                        if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) {
-                                return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
-                        }
-                        $term_id = (int) $wpdb->insert_id;
-                } elseif ( $exists = term_exists( (int) $term_id, $taxonomy ) )  {
-                        // Same name, same slug.
-                        return new WP_Error( 'term_exists', __( 'A term with the name and slug provided already exists.' ), $exists['term_id'] );
-                }
-        } else {
-                // This term does not exist at all in the database, Create it.
-                $slug = wp_unique_term_slug($slug, (object) $args);
-                if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) {
-                        return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error);
-                }
-                $term_id = (int) $wpdb->insert_id;
-        }
+                }
+        }
+
+        $slug = wp_unique_term_slug( $slug, (object) $args );
+
+        if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) {
+                return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database' ), $wpdb->last_error );
+        }
+
+        $term_id = (int) $wpdb->insert_id;
 
         // Seems unreachable, However, Is used in the case that a term name is provided, which sanitizes to an empty string.
@@ -3230 +3217 @@
         if ( ! term_exists( $slug ) )
                 return $slug;
+
+        // As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies.
+        if ( get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) {
+                return $slug;
+        }
 
         // If the taxonomy supports hierarchy and the term has a parent, make the slug unique