我正在处理一个销售汇总表，在该表中输入的 sale_quantity 应该不超过DB中的stock_quantity 。当我在Laravel validate dynamically added input with custom messages使用这个想法时，会有一个答案：
'orderQty.*' => 'required|numeric|min:1|max:'.$product['productQty']
我已经做到了，就像您在SalesController.php的功能存储区 和 功能更新中看到的那样，没有错误发生，但表单拒绝提交，并将其显示为即时消息：
销售数量不得大于'。$ stocks ['stock_quantity']。
这并不代表显示的内容，因为它们在数据库中的库存量更大。
<?php
namespace App\Http\Controllers;
use Illuminate\Support\Facades\DB;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use App\Sale;
use App\Stock;
class SalesController extends Controller
{
/**
* Display a listing of the resource.
*
* @return \Illuminate\Http\Response
*/
function __construct()
{
$this->middleware('permission:sales-list');
$this->middleware('permission:sales-create', ['only' => ['create', 'store']]);
$this->middleware('permission:sales-edit', ['only' => ['edit', 'update']]);
$this->middleware('permission:sales-delete', ['only' => ['destroy']]);
}
/**
* Display a listing of the resource.
*
* @return \Illuminate\Http\Response
*/
public function index()
{
$sales = Sale::orderBy('updated_at', 'desc')->get();
return view('sales.index')->with('sales', $sales);
}
/**
* Show the form for creating a new resource.
*
* @return \Illuminate\Http\Response
*/
public function create()
{
$stocks = Stock::all();
//dd($stocks);
return view('sales.create', compact('stocks'));
//$sales = Sale::pluck('stock_id')->prepend('stock_id');
//$sales = DB::table('stocks')->select('stock_id')->get();
//return view('sales.create')->with('sales',$sales);
}
public function getUnitSellingPrice(Request $request, $stock_name)
{
$stock = Stock::where('stock_name', $stock_name)->first();
if ($stock == null) {
return null;
}
return response()->json($stock->unit_selling_price);
}
public function store(Request $request)
{
$this->validate($request, [
'stock_name' => 'required',
'sale_quantity' => 'required|numeric|min:1|max:\'.$stock[\'stock_quantity\']',
'unit_selling_price' => 'required',
'total_sales_cost' => 'required'
]);
//create stock
$sale = new Sale;
$sale->stock_name = $request->input('stock_name');
$sale->sale_quantity = $request->input('sale_quantity');
$sale->unit_selling_price = $request->input('unit_selling_price');
$sale->total_sales_cost = $request->input('total_sales_cost');
$sale->save();
DB::table('stocks')->where('stock_name', $request->input('stock_name'))->decrement('stock_quantity', $request->input('sale_quantity'));
return redirect('/sales')->with('success', 'Sale Saved');
}
public function show($sales_id)
{
$sale = Sale::find($sales_id);
return view('sales.show')->with('sale', $sale);
}
/**
* Show the form for editing the specified resource.
*
* @param int $sales_id
* @return \Illuminate\Http\Response
*/
public function edit($sales_id)
{
$sale = Sale::findOrFail($sales_id);
$stocks = Stock::latest('stock_name', 'unit_selling_price')->get();
return view('sales.edit', compact('sale', 'stocks'));
}
/**
* Update the specified resource in storage.
*
* @param \Illuminate\Http\Request $request
* @param int $sales_id
* @return \Illuminate\Http\Response
*/
public function update(Request $request, $sales_id)
{
$this->validate($request, [
'stock_name' => 'required',
'sale_quantity' => 'required|numeric|min:1|max:\'.$stock[\'stock_quantity\']',
'unit_selling_price' => 'required',
'total_sales_cost' => 'required'
]);
//create stock
$sale = Sale::find($sales_id);
$sale->stock_name = $request->input('stock_name');
$sale->sale_quantity = $request->input('sale_quantity');
$sale->unit_selling_price = $request->input('unit_selling_price');
$sale->total_sales_cost = $request->input('total_sales_cost');
$sale->save();
return redirect('/sales')->with('success', 'Sale Updated');
}
/**
* Remove the specified resource from storage.
*
* @param int $sales_id
* @return \Illuminate\Http\Response
*/
public function destroy($sales_id)
{
$sale = Sale::find($sales_id);
$sale->delete();
return redirect('/sales')->with('success', 'Sale Removed');
}
}
@extends('layouts.app')
@section('content')
<br>
<h1>Add Sale</h1>
{!! Form::open(['action' => 'SalesController@store', 'method' => 'POST', 'enctype' => 'multipart/form-data']) !!}
<div class="form-group">
<label>Product Name</label>
<select name="stock_name" id="stock_name" class="form-control">
@foreach ($stocks as $stock)
<option value="{{ $stock->stock_name }}">{{ $stock->stock_name}}</option>
@endforeach
</select>
</div>
<div class="form-group">
{{Form::label('sale_quantity', 'Quantity')}}
{{Form::text('sale_quantity', '', ['class' => 'form-control', 'placeholder' => 'Quantity', 'id' => 'sales_quantity'])}}
</div>
<div class="form-group">
{{Form::label('unit_selling_price', 'Unit Selling Price')}}
{{Form::text('unit_selling_price', '', ['class' => 'form-control', 'placeholder' => 'Unit Selling Price', 'id' => 'unit_selling_price'])}}
</div>
<div class="form-group">
{{Form::label('total_sales_cost', 'Total Sales Cost')}}
{{Form::text('total_sales_cost', '', ['class' => 'form-control', 'placeholder' => 'Total Sales Cost', 'id' => 'total_sales_cost', 'readonly' => 'true', 'cursor: pointer' => 'true' ])}}
</div>
{{Form::submit('Submit', ['class' => 'btn btn-primary'])}}
{!! Form::close() !!}
<script>
$(document).ready(function () {
$("#stock_name").on('change', function () {
var stock_name = $(this).val();
$.ajax({
url: '/sales-price/getunitsellingprice/'+stock_name,
method: 'GET',
success: function (response) {
console.log(response);
$("#unit_selling_price").val(response);
},
});
});
});
</script>
<script>
$(document).ready(function () {
$("#total_sales_cost").click(function () {
var sales_quantity = $("#sales_quantity").val();
var unit_selling_price = $("#unit_selling_price").val();
var total_sales_cost = (sales_quantity * unit_selling_price);
$('#total_sales_cost').val(total_sales_cost);
});
});
</script>
@endsection
答案 0 :(得分：1)
SalesController.php在功能存储和更新中更改。 这些是唯一的更改，刀片服务器还可以。
<?php
namespace App\Http\Controllers;
use App\Http\Requests;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use App\Sale;
use DB;
use App\Stock;
class SalesController extends Controller
{
function __construct()
{
$this->middleware('permission:sales-list');
$this->middleware('permission:sales-create', ['only' => ['create', 'store']]);
$this->middleware('permission:sales-edit', ['only' => ['edit', 'update']]);
$this->middleware('permission:sales-delete', ['only' => ['destroy']]);
}
public function index()
{
$sales = Sale::orderBy('updated_at', 'desc')->get();
return view('sales.index')->with('sales', $sales);
}
public function create()
{
$stocks = Stock::all();
//dd($stocks);
return view('sales.create', compact('stocks'));
//$sales = Sale::pluck('stock_id')->prepend('stock_id');
//$sales = DB::table('stocks')->select('stock_id')->get();
//return view('sales.create')->with('sales',$sales);
}
public function getUnitSellingPrice(Request $request, $stock_name)
{
$stock = Stock::where('stock_name', $stock_name)->first();
if ($stock == null) {
return null;
}
return response()->json($stock->unit_selling_price);
}
public function getStockUnitCost(Request $request, $stock_name)
{
$stock = Stock::where('stock_name', $stock_name)->first();
if ($stock == null) {
return null;
}
return response()->json($stock->stock_unit_cost);
}
public function salesWebReport(){
$sales = Sale::orderBy('updated_at', 'desc')->get();
return view('sales.saleswebreport')->with('sales', $sales);
}
public function photocopying(){
$stocks = Stock::all();
//dd($stocks);
return view('sales.photocopy', compact('stocks'));
}
public function store(Request $request)
{
//get retrieves an array
//$stock = \App\Stock::where('stock_name', $request->input('stock_name'))->get();
//first retrieves an array BUT removes everything and produces only the required field value
$stock = Stock::where('stock_name', $request->input('stock_name'))->firstOrFail();
$qty = $stock->stock_quantity;
$this->validate($request, [
'stock_name' => 'required',
'sale_quantity' => 'required|numeric|min:1|max:'.$qty,
'unit_selling_price' => 'required',
'total_sales_cost' => 'required',
'stock_profit' => 'required'
]);
//create stock
$sale = new Sale;
$sale->stock_name = $request->input('stock_name');
$sale->sale_quantity = $request->input('sale_quantity');
$sale->unit_selling_price = $request->input('unit_selling_price');
$sale->total_sales_cost = $request->input('total_sales_cost');
$sale->stock_profit = $request->input('stock_profit');
$sale->save();
DB::table('stocks')->where('stock_name', $request->input('stock_name'))->decrement('stock_quantity', $request->input('sale_quantity'));
return redirect('/sales')->with('success', 'Sale Saved');
}
public function show($sales_id)
{
$sale = Sale::find($sales_id);
return view('sales.show')->with('sale', $sale);
}
public function edit($sales_id)
{
$sale = Sale::findOrFail($sales_id);
$stocks = Stock::latest('stock_name', 'unit_selling_price')->get();
return view('sales.edit', compact('sale', 'stocks'));
}
public function update(Request $request, $sales_id)
{
//get retrieves an array
//$stock = \App\Stock::where('stock_name', $request->input('stock_name'))->get();
//first retrieves an array BUT removes everything and produces only the required field value
$stock = Stock::where('stock_name', $request->input('stock_name'))->firstOrFail();
$qty = $stock->stock_quantity;
$this->validate($request, [
'stock_name' => 'required',
'sale_quantity' => 'required|numeric|min:1|max:'.$qty,
'unit_selling_price' => 'required',
'total_sales_cost' => 'required',
'stock_profit' => 'required'
]);
//create stock
$sale = Sale::find($sales_id);
$sale->stock_name = $request->input('stock_name');
$sale->sale_quantity = $request->input('sale_quantity');
$sale->unit_selling_price = $request->input('unit_selling_price');
$sale->total_sales_cost = $request->input('total_sales_cost');
$sale->stock_profit = $request->input('stock_profit');
$sale->save();
return redirect('/sales')->with('success', 'Sale Updated');
}
public function destroy($sales_id)
{
$sale = Sale::find($sales_id);
$sale->delete();
return redirect('/sales')->with('success', 'Sale Removed');
}
}
答案 1 :(得分：0)
根据显示的错误，可能是因为这行将变量和数组数据作为文字字符串：
'sale_quantity' => 'required|numeric|min:1|max:\'.$stock[\'stock_quantity\']',
尝试使用php双引号：
'sale_quantity' => "required|numeric|min:1|max:$stock['stock_quantity']",
或者，为使解释程序更容易，请在验证步骤之前分配一个简单变量：
$qty = $stock['stock_quantity'];
，然后在验证器中：
'sale_quantity' => "required|numeric|min:1|max:$qty",
您不妨考虑在客户端使用某种类型的验证，以使其更加强大并为用户提供帮助。也许将$qty值从控制器上的edit / create方法传递到刀片页面，然后在用户甚至将其提交给服务器之前使用类似JQuery Validation的形式检查表单。
所以-要解决它，就像这样：
public function store(Request $request)
{
$stock = \App\Stock::find($someIdOfYourChoiceOrFromTheForm)
$qty = $stock->stock_quantity;
$this->validate($request, [
'stock_name' => 'required',
'sale_quantity' => "required|numeric|min:1|max:$qty",
'unit_selling_price' => 'required',
'total_sales_cost' => 'required'
]);