我有一个我最近编辑过的表，用两列添加另一个索引（组合起来必须是唯一的）。
现在问题是我在创建新的模型记录时遇到错误：
完整性约束违规：1062重复输入...用于密钥....
这两列标题为：
举个例子，最终结果如下：1-230185
我已经检查过，记录是从技术上创建的，它只是没有完成并且错误被返回。因此，为简单起见，事先没有记录（因此没有重复的条目），在数据库中创建记录并返回错误（无论如何）。
或者有没有办法直接通过Laravel而不是MySQL？
以下是我的控制器中的公共功能：
public function store(Request $request)
{
$this->validate(request(), [
'pro_number' => 'required',
'shipment_origin' => 'required'
/*'piecesNumber' => 'required' (had to remove for now, but must review)*/
]);
$user_id = Auth::id();
$input = $request->all();
//Save Initial Shipment Data
$shipment = new Shipment();
$shipment->pro_number = request('pro_number');
$shipment->shipment_origin = request('shipment_origin');
$shipment->date = request('date');
$shipment->due_date = request('due_date');
$shipment->tractor_id = request('tractor_id');
$shipment->trailer_id = request('trailer_id');
$shipment->driver_id = request('driver_id');
$shipment->notes = request('notes');
$shipment->shipper_no = request('shipper_no');
$shipment->ship_to = request('ship_to');
$shipment->ship_from = request('ship_from');
$shipment->bill_to = request('bill_to');
$shipment->bill_type = request('bill_type');
$shipment->load_date = request('load_date');
$shipment->shipment_status = 1;
$shipment->shipment_billing_status = (isset($request->shipment_billing_status) && !empty($request->shipment_billing_status)) ? $request->shipment_billing_status : 1;
$shipment->created_by = $user_id;
$shipment->cn_billtoName = request('cn_billtoName');
$shipment->cn_billtoAddress1 = request('cn_billtoAddress1');
$shipment->cn_billtoAddress2 = request('cn_billtoAddress2');
$shipment->cn_billtoCity = request('cn_billtoCity');
$shipment->cn_billtoState = request('cn_billtoState');
$shipment->cn_billtoZip = request('cn_billtoZip');
$shipment->cn_billtoEmail = request('cn_billtoEmail');
$shipment->cn_billtoPhone = request('cn_billtoPhone');
$shipment->cn_shiptoName = request('cn_shiptoName');
$shipment->cn_shiptoAddress1 = request('cn_shiptoAddress1');
$shipment->cn_shiptoAddress2 = request('cn_shiptoAddress2');
$shipment->cn_shiptoCity = request('cn_shiptoCity');
$shipment->cn_shiptoState = request('cn_shiptoState');
$shipment->cn_shiptoZip = request('cn_shiptoZip');
$shipment->cn_shiptoEmail = request('cn_shiptoEmail');
$shipment->cn_shiptoPhone = request('cn_shiptoPhone');
$shipment->cn_shipfromName = request('cn_shipfromName');
$shipment->cn_shipfromAddress1 = request('cn_shipfromAddress1');
$shipment->cn_shipfromAddress2 = request('cn_shipfromAddress2');
$shipment->cn_shipfromCity = request('cn_shipfromCity');
$shipment->cn_shipfromState = request('cn_shipfromState');
$shipment->cn_shipfromZip = request('cn_shipfromZip');
$shipment->cn_shipfromEmail = request('cn_shipfromEmail');
$shipment->cn_shipfromPhone = request('cn_shipfromPhone');
$shipment->fuelChargeDesc = request('fuelChargeDesc');
$shipment->fuelChargeAmt = request('fuelChargeAmt');
$shipment->fuelChargeTotal = request('fuelChargeTotal');
$shipment->permitChargeDesc = request('permitChargeDesc');
$shipment->permitChargeAmt = request('permitChargeAmt');
$shipment->permitChargeTotal = request('permitChargeTotal');
$shipment->otherChargeDesc = request('otherChargeDesc');
$shipment->otherChargeAmt = request('otherChargeAmt');
$shipment->otherChargeTotal = request('otherChargeTotal');
$shipment->noCharge = request('noCharge');
$shipment->noSettle = request('noSettle');
$shipment->Total = request('Total');
if ((request('shipment_billing_status') == 2) || (request('shipment_billing_status') == 3)){
$balance = 0.00;
}else{
$balance = request('Total');
}
$shipment->Balance = $balance;
$shipment->freightBillSubtotal = request('freightBillSubtotal');
$shipment->save();
//Save Shipment Details
for ($i = 0; $i < count($request->shipment_details['piecesNumber']); $i++) {
//the first line used to be 'shipment_id' => $shipment->pro_number,
Shipment_Detail::create([
'shipmentID' => $shipment->id,
'pieces_number' => $request->shipment_details['piecesNumber'][$i],
'pieces_type' => $request->shipment_details['piecesType'][$i],
'rate_type' => $request->shipment_details['rateType'][$i],
'charge' => $request->shipment_details['charge'][$i],
'weight' => $request->shipment_details['weight'][$i],
'hazmat' => $request->shipment_details['hazmat'][$i],
'description' => $request->shipment_details['description'][$i] ]);
}
$carrier = \App\Customer::where('carrier','=',1)->get();
foreach($carrier as $car){
$carrierUsers = $car->users;
if ($carrierUsers->count() > 0){
foreach($carrierUsers as $carrierUser){
$carrierUser->notify(new FreightBillNew($shipment));
}
}
}
Session::flash('success_message','Freight Bill Successfully Created'); //<--FLASH MESSAGE
//Return to Register//
return redirect('/shipments/accounts');
}