正在验证空值。拉威尔

Question

我有一个动态添加/删除输入的表单，但是如果我添加了输入但没有输入任何内容，空值将被写入数据库，验证器不会捕获空值。谷歌没有发现类似的问题，相反，每个人都对如何通过验证器传递null感兴趣。也许我在谷歌上搜索得不好。

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$request->validate([
    'properties' => 'required|min:1',
]);

属性字段：

<div class="input-group row">
                  <label for="category_id" class="col-sm-2 col-form-label">Product properties: </label>
                  <div class="row">
                      <div class="col-lg-12">
                          <div id="inputFormRow">
                            <div class="input-group mb-3">
                              @isset($product)
                                @foreach($product->properties as $prod)
                                    <input type="text" name="properties[][key]" value="{{ $prod['key'] ?? '' }}" class="form-control m-input editinp-key" placeholder="Key" autocomplete="off">
                                    <input type="text" name="properties[][value]" value="{{ $prod['value'] ?? '' }}" class="form-control m-input ml-3 editinp-value" placeholder="Value" autocomplete="off">
                                    <div class="input-group-append ml-3">
                                        <button id="removeRow" type="button" class="btn btn-danger">Remove</button>
                                    </div>
                                @endforeach
                              @endisset
                                @if(Session::has('properties'))
                                  @foreach(Session::get('properties') as $prop)
                                    <input type="text" name="properties[][key]" value="{{ $prop['key'] ?? '' }}" class="form-control m-input" placeholder="Key" autocomplete="off">
                                    <input type="text" name="properties[][value]" value="{{ $prop['value'] ?? '' }}" class="form-control m-input ml-3" placeholder="Value" autocomplete="off">
                                  <div class="input-group-append ml-3">
                                      <button id="removeRow" type="button" class="btn btn-danger">Remove</button>
                                  </div>
                                  @endforeach
                                @endif
                              </div>
                          </div>

                          <div id="newRow"></div>
                          <button id="addRow" type="button" class="btn btn-info">Add</button>
                      </div>
                  </div>
                </div>

jQuery：

$("#addRow").click(function () {
        var html = '';
        html += '<div id="inputFormRow">';
        html += '<div class="input-group mb-3">';
        html += '<input type="text" name="properties[][key]" class="form-control m-input ml-3" placeholder="Key" autocomplete="off">';
        html += '<input type="text" name="properties[][value]" class="form-control m-input ml-3" placeholder="Value" autocomplete="off">';
        html += '<div class="input-group-append ml-3">';
        html += '<button id="removeRow" type="button" class="btn btn-danger">Remove</button>';
        html += '</div>';
        html += '</div>';
        
        $('#newRow').append(html);
    });

  // remove row
  $('#removeRow').on('click', function () {
      $(this).closest('#inputFormRow').remove();
  });

Answer 1

假设您传递了一个带有key和value键的对象数组，您可以像这样验证您的请求：

$request->validate([
   'properties' => 'required|min:1',
   'properties.*.key' => 'required',
   'properties.*.value' => 'required',
]);

Answer 2

也许可以使用Validator？

    $data = Validator::make($request->all(), [
        'properties' => ['present', 'string', 'min:1'],
    ]);
    if ($data->fails()) {
        $error_msg = "Validation failed, please reload the page";
        return Response::json($data->errors());
    }

从更多的评论中，我意识到你正在尝试做什么:它与我在这里所做的非常相似: page.blade.php：

<table class="table table-bordered" id="dynamic_field">
    @if ($errors->any())
        <tbody id="dynamic_field-1">
            @php $name_count = 1 @endphp
            @foreach (old('name') as $name)
                @if($name_count == 1)
                    <tr id="{{$name_count}}">
                        <td style="width: 90%; padding: 0px; position: relative;"><input style="position: absolute; top: 0px; left: 0px; height: 100%; border: none; border-radius: 0px;" type="text"    name="name[]"   value="{{old('name.'.($name_count-1))}}"  class="form-control  @error('name.'.($name_count-1)) is-invalid @enderror" maxlength="240"/></td>
                        <td style="width: 10%;"><button type="button" name="add"      id="add-1"                                class="btn btn-success">{{ __('Add More') }}</button></td>
                    </tr>
                @else
                    <tr id="row{{$i}}">
                        <td style="width: 90%; padding: 0px; position: relative;"><input style="position: absolute; top: 0px; left: 0px; height: 100%; border: none; border-radius: 0px;" type="text"    name="name[]"   value="{{old('name.'.($name_count-1))}}"  class="form-control  @error('name.'.($name_count-1)) is-invalid @enderror" maxlength="240"/></td>
                        <td style="width: 10%;"><button type="button" name="remove"   id="{{$i}}"                               class="btn btn-danger btn_remove">X</button></td>
                    </tr>
                @endif
                @php $i += 1 @endphp
                @php $name_count += 1 @endphp
            @endforeach
        </tbody>
    
    @else
        <tbody id="dynamic_field-1">
            <tr>
                <td style="width: 90%; padding: 0px; position: relative;"><input style="position: absolute; top: 0px; left: 0px; height: 100%; border: none; border-radius: 0px;" type="text"    name="name[]"  class="form-control" maxlength="240"/></td>
                <td style="width: 10%;"><button type="button"   name="add"      class="btn btn-success"  id="add-1" >{{ __('Add More') }}</button></td>
            </tr>
        </tbody>
    @endif
</table>

jQuery：

$(document).ready(function(){         
            var i = {{$i ? $i+=1 : '1'}};
            $('#add-1').click(function(){
                i++;
                $('#dynamic_field-1').append('<tr id="row'+i+'"><td style="width: 90%; padding: 0px; position: relative;"><input style="position: absolute; top: 0px; left: 0px; height: 100%; border: none; border-radius: 0px;" type="text"    name="name[]"  class="form-control" maxlength="240"/></td><td style="width: 10%;"><button type="button" name="remove" id="'+i+'" class="btn btn-danger btn_remove">X</button></td>  </tr> ');
            });
            $(document).on('click', '.btn_remove', function(){
                var button_id = $(this).attr("id");
                $('#row'+button_id+'').remove();
            });
        });

和控制器：

foreach($request->input('name') as $key => $value) {
            $rules["name.{$key}"] = array('string', 'max:255');
        }
        $data = Validator::make($request->all(),   $rules);
        if ($data->fails()) {
            return redirect()
                ->back()
                ->withErrors($data)
                ->withInput($request->input());
        }else{...

Answer 3

你的描述不够清楚，无法理解。对于验证，您可以使用required|min:1|not_in:null来获取验证错误