Hi guys,
I just started to work with relational data in Yii2. I don’t understand all of it perfectly so I came here to ask.
I have several tables related to each other and sometimes a second relation works sometimes it doesn’t.
For example, I have an Employees table and a Departments table that are related through department_ID. Also I have a third table, call it Work for the example.
In Work my relation looks:
public function getEmployee()
{
return $this->hasOne(Employees::className(), ['employee_ID' => 'employee_ID']);
}
In Employees the relation looks:
public function getDepartment()
{
return $this->hasOne(Department::className(), ['unique_ID' => 'department_ID']);
}
I have this code in my WorkController:
$employee = $model->getEmployee()->select(['position', 'department_ID', 'collar']);
department = $employee->department
$employee->department gives the following error:
Getting unknown property: yii\db\ActiveQuery::department
Can you guys help me for a solution for this multi level relation?
In other tables I could go deeper like Department->Division->Head of Division (all three are separate tables) with the same type of relations.
Thanks!