public function getStaff() { return $this->hasMany(Staff::className(), ['dept_id' => 'dept_id']); }
public function getStaff() { return $this->hasOne(Staff::className(), ['staff_id' => 'staff_id']); }
public function getStaff() { return $this->hasMany(Staff::className(), ['dept_id' => 'dept_id']); }
public function getStaff() { return $this->hasOne(Staff::className(), ['staff_id' => 'staff_id']); }