Laravel 7 - 如何正确显示旧输入/s？

Question

在将表单输入/值提交给控制器验证之前，当验证失败时，我试图显示旧的/以前的输入，但它只重定向回页面，表单中的所有输入字段为空或不显示以前的输入。

这是我在store函数中的控制器代码(SaleController)：

public function store(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'invoice_no' => 'required|unique:sales_h|max:255',
        ]);

        if($validator->fails()){
            //dd($validator);
            Toastr::warning('Invoice No. cannot be repeated or blank.', 'Warning');
            return redirect()->back()->withInput($request->all);
        }
    /* ...... */
}

这是我的视图刀片文件 (create.blade.php) 的 sn-p 源代码：

<form class="form-horizontal" method = "POST" action = "{{ route('sales.store') }}">
            @csrf
            <div class="card-body">
                @if ($errors->any())
                    <div class="alert alert-danger">
                        <ul class="mb-0">
                        @foreach ($errors->all() as $error)
                            <li>{{ $error }}</li>
                        @endforeach
                        </ul>
                    </div>
                @endif
                <div class="form-group row">
                    <div class="col-md-12">
                        <div class="alert alert-info alert-dismissible">
                            <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
                            <h5><i class="icon fas fa-info" d></i> Info!</h5>
                            A sales order is a document generated by the seller upon receiving a 
                            purchase order from a <strong>buyer/customer</strong> specifying the details about the product or service 
                            along with price, quantity, buyer details.
                        </div>
                        <strong><font color="red">*</font> Indicates required fields.</strong>
                    </div>
                    <div class="col-md-4">
                        <label for="date" class="col-sm-6 col-form-label">Date <font color="red">*</font></label>
                        <div class="input-group mb-2 {{$errors->has('date') ? 'has-error' : ''}}" >
                            <div class="input-group-prepend">
                                <span class="input-group-text"><i class="far fa-calendar-alt"></i></span>
                            </div>
                            <input type="text" 
                                    class="form-control" 
                                    id="date" 
                                    name = "date"
                                    autocomplete="off" 
                                    value="{{ old('date') }}"
                                    required>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <label for="invoice_no" class="col-sm-6 col-form-label">Invoice No. <font color="red">*</font></label>
                        <div class="input-group mb-2">
                            <div class="input-group-prepend {{$errors->has('invoice_no') ? 'has-error' : ''}}">
                                <span class="input-group-text"><i class="fas fa-hashtag"></i></span>
                            </div>
                            <input type="text" 
                                    class="form-control" 
                                    id="invoice_no" 
                                    name = "invoice_no" 
                                    maxlength = "15"
                                    value="{{ old('invoice_no') }}"
                                    onkeyup="this.value=this.value.replace(/[^\d]/,'')" 
                                    required>
                        </div>
                    </div>
                    <div class="col-md-4">
                        <label for="shop_name" class="col-sm-6 col-form-label">Customer Name <font color="red">*</font></label>
                        <div class="input-group mb-2">
                            <div class="input-group-prepend {{$errors->has('shop_name') ? 'has-error' : ''}}">
                                <span class="input-group-text"><i class="fas fa-hashtag"></i></span>
                            </div>
                            <input type = "text" 
                                    class="form-control" 
                                    id="shop_name" 
                                    name = "shop_name" 
                                    placeholder = "Customer Name" 
                                    autocomplete = "on"
                                    value="{{ old('shop_name') }}"
                                    required>
                            </div>
                        </div>
                    </div>
                </div>
                <div class = "form-group row">
                    <div class="col-md-12">
                        <label for = "info" class = "col-md-4 col-form-label"><strong><i class="fas fa-info-circle"></i></strong> Sales Order Information</label>
                        <div class = "col-sm-12  {{$errors->has('product_information') ? 'has-error' : ''}}">
                            <textarea name = "product_information" 
                                    class = "form-control" 
                                    rows = "4"
                                    value="{{ old('product_information') }}"
                                    ></textarea>
                        </div>
                    </div>
                </div>

                <div class = "col-md-12 field-wrapper">
                    <div class = "form-group row">
                        <div class="col-md-12">
                            <label for="id_raw_product" class="col-sm-4 col-form-label">Product Name <font color="red">*</font></label>
                        </div>
                        <div class="col-sm-3">
                            <input type="hidden" readonly = "true" class="form-control" id="id_raw_product_1" name = "id_raw_product[]" placeholder = "Product Name" required>
                            <input type="text" 
                                    readonly = "true" 
                                    class="form-control" 
                                    id="name_raw_product_1" 
                                    name = "name_raw_product[]" 
                                    value="{{ old('id_raw_product_1') }}"
                                    placeholder = "Product Name">
                        </div>
                        <div class="col-sm-2">
                            <a href = "/transaction/sales/product/popup_media/1" 
                                class = "btn btn-info" 
                                title = "Product" 
                                data-toggle = "modal" 
                                data-target = "#modal-default">Product</a>
                        </div>
                        <div class="col-sm-3">
                            <input type="number" 
                                class="form-control" 
                                id="price_1" 
                                name = "price[]" 
                                value="{{ old('price_1') }}"
                                placeholder = "Price" 
                                onkeyup="this.value=this.value.replace(/[^\d]/,'')" required>
                        </div>
                        <div class="col-sm-2">
                            <input type="number" 
                                class="form-control" 
                                id="total_1" 
                                name = "total[]" 
                                value="{{ old('total_1') }}"
                                placeholder = "Quantity" 
                                onkeyup="this.value=this.value.replace(/[^\d]/,'')" required>
                        </div>
                        <div class = "col-sm-2">
                            <a href = "javascript:void(0)" class = "btn btn-primary add_Button" title = "Add Row"><i class = "fas fa-plus"></i></a>

                        </div>
                    </div>
                </div>
            </div>
            <!-- /.card-body -->
            <div class="card-footer">
              <button type="submit" class="btn btn-default float-right" name = "submit_create" id = "submit_create">Submit</button>
            </div>
            <!-- /.card-footer -->
          </form>

Answer 1

像这样编写你的控制器代码 -

public function store(Request $request)
{
    $validator = Validator::make($request->all(), [
        'invoice_no' => 'required|unique:sales_h|max:255',
    ]);

    if($validator->fails()){
        return redirect()->back()->withInput()->withErrors($validator->messages()->all());

    }
}

并在刀片文件中添加此代码 -

@if ($errors->any())
    <div class="alert alert-danger">
        <ul class="mb-0">
           @foreach ($errors->all(':message') as $input_error)
                 <li>{{ $input_error }}</li>
           @endforeach
        </ul>
    </div>
@endif