Ticket #5344: 5344-limit-topic-creation.2.patch

sites/trunk/wordpress.org/public_html/wp-content/plugins/support-forums/inc/class-hooks.php

@@ -22 +22 @@
                 add_filter( 'wp_insert_post_data',             array( $this, 'set_post_date_gmt_for_pending_posts' ) );
                 add_action( 'wp_print_footer_scripts',         array( $this, 'replace_quicktags_blockquote_button' ) );
 
+                add_filter( 'bbp_new_topic_pre_insert',        array( $this, 'limit_topic_tag_creation' ) );
+                add_filter( 'bbp_edit_topic_pre_insert',       array( $this, 'limit_topic_tag_creation' ) );
+                add_filter( 'bbp_new_reply_pre_set_terms',     array( $this, 'limit_topic_reply_tag_creation' ) );
+                add_filter( 'bbp_edit_reply_pre_set_terms',    array( $this, 'limit_topic_reply_tag_creation' ) );
+
                 // Add bbPress support to the WordPress.org SEO plugin.
                 add_filter( 'wporg_canonical_base_url', array( $this, 'wporg_canonical_base_url' ) );
                 add_filter( 'wporg_canonical_url',      array( $this, 'wporg_canonical_url' ) );
@@ -128 +133 @@
                 add_filter( 'bbp_subscription_mail_message', array( $this, 'bbp_subscription_mail_message'), 5, 3 );
         }
 
+        /**
+         * Limit the creation of new tags to moderators or above.
+         *
+         * This curates the list of tags, keeping the tag list short and relevant.
+         *
+         * @param array $topic Array of post details.
+         *
+         * @return array Filtered post details array.
+         */
+        public function limit_topic_tag_creation( $topic ) {
+                // Only affect the topic post type.
+                if ( bbp_get_topic_post_type() !== $topic['post_type'] ) {
+                        return $topic;
+                }
+
+                // Do not modify anything if the user has moderator capabilities.
+                if ( current_user_can( 'moderate' ) ) {
+                        return $topic;
+                }
+
+                $existing_tags = array();
+
+                $topic_tag_slug = get_option( '_bbp_topic_tag_slug', 'topic-tag' );
+
+                // Loop through the proposed taxonomies
+                foreach ( $topic['tax_input'] as $taxonomy => $terms ) {
+                        // Do not check non-topic-tag terms.
+                        if ( $topic_tag_slug !== $taxonomy ) {
+                                var_dump( $topic_tag_slug . ' is not ' . $taxonomy );
+                                continue;
+                        }
+
+                        // Loop over the terms added ot this taxonomy.
+                        foreach ( $terms as $term ) {
+                                if ( term_exists( $term, $taxonomy ) ) {
+                                        if ( ! isset( $existing_tags[ $taxonomy ] ) ) {
+                                                $existing_tags[ $taxonomy ] = array();
+                                        }
+
+                                        $existing_tags[ $taxonomy ][] = $term;
+                                }
+                        }
+                }
+
+                $topic['tax_input'] = $existing_tags;
+
+                return $topic;
+        }
+
+        /**
+         * Limit the creation of new tags to moderators or above.
+         *
+         * This curates the list of tags, keeping the tag list short and relevant.
+         *
+         * @param array|string $terms Array of terms to apply to a topic.
+         *
+         * @return array|string Filtered array of terms to apply to a topic.
+         */
+        public function limit_topic_reply_tag_creation( $terms ) {
+                // Do not modify anything if the user has moderator capabilities.
+                if ( current_user_can( 'moderate' ) ) {
+                        return $terms;
+                }
+
+                if ( ! is_array( $terms ) ) {
+                        $terms = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
+                }
+
+                $existing_terms = array();
+
+                // Loop through the proposed tags and keep only the existing ones.
+                foreach ( $terms as $term ) {
+                        if ( term_exists( $term, bbp_get_topic_tag_name() ) ) {
+                                $existing_terms[] = $term;
+                        }
+                }
+
+                // Return a string if the input value was one.
+                if ( ! is_array( $terms ) ) {
+                        return implode( ', ', $terms );
+                }
+
+                return $existing_terms;
+        }
+
         /**
          * Check "Notify me of follow-up replies via email" box for new topics by default.
          *