belongsTo(Branch::class, 'branch_id', 'id'); } public function province() { return $this->belongsTo(Province::class, 'province_code', 'code'); } public function city() { return $this->belongsTo(City::class, 'city_code', 'code'); } public function district() { return $this->belongsTo(District::class, 'district_code', 'code'); } public function village() { return $this->belongsTo(Village::class, 'village_code', 'code'); } }