'date', 'completed_at' => 'datetime', ]; public function sourcingCase() { return $this->belongsTo(SupplierSourcingCase::class, 'sourcing_case_id'); } public function itemMaster() { return $this->belongsTo(ItemMaster::class, 'item_master_id'); } public function purchaseRequisition() { return $this->belongsTo(Transaction::class, 'purchase_requisition_id'); } public function assignedTo() { return $this->belongsTo(User::class, 'assigned_to'); } }