Dependent Dropdown in Yii2 making values reset while updating the Active form

Question

Here my problem is i have a form . In that i have dependent dropdown. for example if i select company name it automatically selects the dependent company email and company p

Answer 1

Finally i found answer, actually mistake was mine, because here am using getting records based on company_id but here i have used approvaldetails table id so that is the mistake, after i changed it to company_id, now its working good

public function actionLists2($id)
    {

        $countEmployeedetails = Employeedetails::find()
                ->where(['company_id' => $id])
                ->count();


        $employeedetails = Employeedetails::find()
                ->where(['company_id' => $id])
                ->all();

        if($countEmployeedetails >= 0)
        {
            foreach($employeedetails as $employee)
            {
                // $arr["id"] . '-' . $arr['designation']
                    echo "<option value='".$employee->id. '-' .$employee->name. "'>".$employee->RelationName."</option>";
            }
        }
        else{
            echo "<option>-</option>";
        }

    }