private function filterHasJoin()
{
$meta = $this->model->getMeta();
foreach ([$this->_filterAnd, $this->_filterOr, $this->_filterExclude, $this->_filterOrExclude] as $data) {
foreach ($data as $subFilter) {
foreach ($subFilter as $key => $value) {
if (strpos($key, '__') !== false) {
$parts = explode('__', $key);
if ($meta->hasRelatedField(array_shift($parts))) {
return true;
}
}
}
}
}
return false;
}
