hasMany(DeliveryAppointmentCar::class,"delivery_appointment_id","id"); } public function details() { //明细 return $this->hasMany(DeliveryAppointmentDetail::class); } public function user() { //用户 return $this->belongsTo(User::class); } public function owner() { //货主 return $this->belongsTo(Owner::class); } public function warehouse() { //仓库 return $this->belongsTo(Warehouse::class); } }