Define qualifyColumns method

Author: Gianluca

src/Illuminate/Database/Eloquent/Model.php

@@ -434,6 +434,20 @@ public function qualifyColumn($column)
         return $this->getTable().'.'.$column;
     }
 
+    /**
+     * Qualify the column's lists name by the model's table.
+     *
+     * @param  array|mixed  $columns
+     * @return array
+     */
+    public function qualifyColumns(...$columns) {
+        $qualifiedArray = [];
+        foreach($columns as $column) {
+            $qualifiedArray[] = $this->qualifyColumn($column);
+        }
+        return $qualifiedArray;
+    }
+
     /**
      * Create a new instance of the given model.
      *