public function getField($key)
    {
        foreach ($this->fields as $field) {
            if ($field->getKey() == $key) {
                return $field;
            }
        }
    }
public function getField($key)
    {
        foreach ($this->fields as $field) {
            if ($field->getKey() == $key) {
                return $field;
            }
        }
    }
public function getField ( $ key ) { foreach ( $ this -> fields as $ field ) { if ( $ field -> getKey ( ) == $ key ) { return $ field ; } } }
Get field by key.

@param string $key

@return FormField|null
Get field by key .