added entity types

Author: Bohdan Berezhniy

Model/ResourceModel/Category.php

@@ -284,4 +284,12 @@ public function lookupStoreIds($categoryId, $useCache = true)
 
         return [];
     }
+
+    /**
+     * @return string
+     */
+    public function getEntityType()
+    {
+        return 'category';
+    }
 }

Model/ResourceModel/Post.php

@@ -527,4 +527,12 @@ protected function _lookupAll($postId, $tableName, $field)
 
         return $adapter->fetchAll($select);
     }
+
+    /**
+     * @return string
+     */
+    public function getEntityType()
+    {
+        return 'post';
+    }
 }

Model/ResourceModel/Tag.php

@@ -340,4 +340,12 @@ protected function _lookupAll($tagId, $tableName, $field)
 
         return $adapter->fetchAll($select);
     }
+
+    /**
+     * @return string
+     */
+    public function getEntityType()
+    {
+        return 'tag';
+    }
 }