adapt api to list all values from core fields

src/api/class-tainacan-rest-controller.php

@@ -248,9 +248,23 @@ class TAINACAN_REST_Controller extends WP_REST_Controller {
 	private function prepare_meta($mapped, $request, $query, $mapped_v, $args){
 		$request_meta_query = $request[$mapped];
 
+		// if the meta/date/taxquery has a root relation
+        if( isset( $request_meta_query['relation']) )
+            $args[ $mapped_v ]['relation'] = $request_meta_query['relation'];
+
 		// If is a multidimensional array (array of array)
 		if($this->contains_array($request_meta_query, $query)) {
 			foreach ( $request_meta_query as $index1 => $a ) {
+
+                // handle core field
+                if( array_key_exists("key", $a) ){
+                    $field = new Tainacan\Entities\Field($a['key']);
+                    if( strpos( $field->get_field_type(), 'Core') !== false ){
+                        // $args[ 'post_title_in' ] = ( is_array( $a['value'] ) ) ? $a['value'] : [$a['value']];
+                        continue;
+                    }
+                }
+
 				foreach ( $query as $mapped_meta => $meta_v ) {
 					if ( isset( $a[ $meta_v ] ) ) {
 						$args[ $mapped_v ][ $index1 ][ $meta_v ] = $request[ $mapped ][ $index1 ][ $meta_v ];

src/classes/field-types/relationship/Relationship.vue

@@ -118,7 +118,6 @@
             },
             mountQuery( search ){
                 let query = []
-                query['search'] = search;
                 if( this.searchFields.length > 0){
                     query['metaquery'] = [];
                     const metaquery = query['metaquery'];
@@ -131,6 +130,8 @@
                     }
 
                     query['metaquery'] = metaquery;
+                } else {
+                    query['search'] = search;
                 }
                 return query;
             }

src/classes/repositories/class-tainacan-fields.php

@@ -641,6 +641,30 @@ class Fields extends Repository {
 		// Clear the result cache
 		$wpdb->flush();
 
+		$field = new Entities\Field( $field_id );
+
+		// handle core titles
+		if( strpos( $field->get_field_type(), 'Core') !== false ){
+		    $collection = new Entities\Collection( $collection_id );
+		    $Tainacan_Items = \Tainacan\Repositories\Items::getInstance();
+            $items = $Tainacan_Items->fetch( [], $collection, 'OBJECT');
+            $return = [];
+
+            foreach ($items as $item) {
+                if( strpos( $field->get_field_type(), 'Core_Title')  !== false  ){
+                    $return[] = [ 'item_id' => $item->get_id(), 'field_id' => $field_id, 'mvalue' => $item->get_title()  ];
+                } else {
+                    $return[] = [ 'item_id' => $item->get_id(), 'field_id' => $field_id, 'mvalue' => $item->get_description()  ];
+                }
+            }
+
+            if (!empty($return)) {
+                $results[] = $return;
+            }
+
+            return $results;
+        }
+
 		$item_post_type = "%%{$collection_id}_item";
 
 		$collection = new Entities\Collection($collection_id);

src/classes/repositories/class-tainacan-items.php

@@ -25,6 +25,7 @@ class Items extends Repository {
     protected function __construct()
     {
         parent::__construct();
+        add_filter( 'posts_where', array(&$this, 'title_in_posts_where'), 10, 2 );
     }
 
     public function get_map() {
@@ -311,4 +312,25 @@ class Items extends Repository {
 		return new Entities\Item( wp_trash_post( $args[0] ) );
 	}
 
+    /**
+     * allow wp query filter post by array of titles
+     *
+     * @param $where
+     * @param $wp_query
+     * @return string
+     */
+    public function title_in_posts_where( $where, &$wp_query ) {
+        global $wpdb;
+        if ( $post_title_in = $wp_query->get( 'post_title_in' ) ) {
+            if(is_array( $post_title_in )){
+                $quotes = [];
+                foreach ($post_title_in as $title) {
+                    $quotes[] = "'" .   esc_sql( $wpdb->esc_like( $title ) ). "'";
+                }
+            }
+
+            $where .= ' AND ' . $wpdb->posts . '.post_title IN ( ' .implode(',', $quotes ) . ')';
+        }
+        return $where;
+    }
 }