/** * @param string $column_name * @param string $value * @param boolean $equal * * @return FilterInterface */ public function findBy($column_name, $value, $equal = true) { $source = $this->getSourceM($column_name); $this->filter->addWhere(array('source' => $source, 'field' => $column_name, 'value' => $value, 'equal' => $equal)); return $this; }