Yii2 Filters with Sqldataprovider - mysql

Question

I have following code in my search() function of search model. Data is displaying correctly in gridview but i'm not able to use searching functions of gridview.
public function search($params)
{
$totalCount = Yii::$app->db->createCommand('SELECT COUNT(*) FROM patient_test')->queryScalar();
$query = new Query();
$query->select('patient.id as id,patient_test.receipt_number,patient.name as patient_id, GROUP_CONCAT(test_group.name) as test_group_id, patient.age as patient_test_age')
->from('patient_test');
$query->join = [
['LEFT JOIN', 'patient', 'patient_test.patient_id = patient.id'],
['LEFT JOIN', 'test_group', 'patient_test.test_group_id = test_group.id']];
$query->groupBy(['patient_test.patient_id', 'patient_test.receipt_number', 'patient_test.is_sample_received', 'patient_test.is_ready']);
$dataProvider = new SqlDataProvider([
// 'db' => Yii::$app->db,
'sql' => $query->createCommand()->sql,
'totalCount' => $totalCount,
'sort' => [
'attributes' => [
'patient_id' => [
'desc' => ['patient_id' => SORT_DESC ],
'default' => SORT_DESC,
],
],
], 'pagination' => [
'pageSize' => $pagination,
]
]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to return any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
// grid filtering conditions
$query->andFilterWhere([
'id' => $this->id,
'is_sample_received' => $this->is_sample_received,
]);
$query->andFilterWhere(['like', 'patient_test.receipt_number', $this->receipt_number])
->andFilterWhere(['like', 'patient.name', $this->patient_id])
->andFilterWhere(['like', 'test_group.name', $this->test_group_id])
->andFilterWhere(['like', 'patient.age', $this->patient_test_age])
->andFilterWhere(['like', 'patient.mobile_no', $this->patient_test_mobile]);
return $dataProvider;
}
from this, my code is working fine but filtration/searching not working