belongsTo('app\User'); } public function bookingSupplier(){ return $this->belongsTo('app\BookingSupplier '); } public function chinaBankSlip(){ return $this->hasOne(ChinaBankSlip::class); } public function userBankSlip(){ return $this->hasOne(UserBankSlip::class); } public function purchaseOrder(){ return $this->hasOne(PurchaseOrder::class); } public function invoice(){ return $this->hasOne(Invoice::class); } }