Question

我是laravel的新手，我需要更新目录，但是我的问题是即使我不想更新程序强制执行的图像..我该怎么办？

我想要的是更新表单而无需任何字段..因为我目前在这里拥有的程序要求我输入所有字段

我的控制器

 $this->validate($request, [
        'title' => 'required',
        'description' => 'required',
        'about_image' => ''
    ]);

    if ($request->has('about_image'))
    {   
        //Handle File Upload

        $about = [];
        foreach ($request->file('about_image') as $key => $file)
        {
            // Get FileName
            $filenameWithExt = $file->getClientOriginalName();
            //Get just filename
            $filename = pathinfo( $filenameWithExt, PATHINFO_FILENAME);
            //Get just extension
            $extension = $file->getClientOriginalExtension();
            //Filename to Store
            $fileNameToStore = $filename.'_'.time().'.'.$extension;
            //Upload Image
            $path = $file->storeAs('public/about_images',$fileNameToStore);
            array_push($about, $fileNameToStore);
        }

        $fileNameToStore = serialize($about);
    }
    else
    {
        $fileNameToStore='noimage.jpg';
    }

    foreach ($about as $key => $value) {
        $aboutContent =  About::find($id);

        $aboutContent->title = $request->title[$key];

        $aboutContent->description = $request->description[$key];     

        if($request->hasFile('about_image')){
        $aboutContent->about_image = $value;    
        }

        $aboutContent->save();
    }
    return redirect('/admin/airlineplus/aboutus')->with('success', 'Content Created');

我的视图

 {!! Form::open(['action'=>['Admin\AboutusController@update', $about->id], 'method' => 'POST','enctype'=>'multipart/form-data', 'name' => 'add_name', 'id' => 'add_name']) !!}
<div class="form-group">   
    <div class="table-responsive">  
        <table class="table table-bordered" id="dynamic_field">  
           <tr>  
              <td>  {{Form::text('title[]', $about->title, ['class' => 'form-control', 'placeholder' => 'Enter a Title'])}}<br>
                    {{Form::textarea('description[]', $about->description, ['class' => 'form-control', 'placeholder' => 'Enter a Description'])}} <br>

                          {{ Form::file('about_image[]') }} <b>{{ $about->about_image }}</b>


              </td>
              <td>{{ Form::button('', ['class' => 'btn btn-success fa fa-plus-circle', 'id'=>'add','name'=>'add', 'style'=>'font-size:15px;']) }}</td>
           </tr>  
        </table>  
        {{Form::hidden('_method', 'PUT')}}
        {{Form::submit('submit', ['class'=>'btn btn-primary', 'name'=>'submit'])}}
    </div> 
</div>  
{!! Form::close() !!}

Answer 1

如果要更新表单而不需要任何字段，请删除

$this->validate($request, [
        'title' => 'required',
        'description' => 'required',
        'about_image' => ''
    ]);

来自控制器

if (!empty($about)) {
            foreach ($about as $key => $value) {
                $aboutContent = About::find($id);
                $aboutContent->title = $request->title[$key];
                $aboutContent->description = $request->description[$key];
                if ($request->hasFile('about_image')) {
                    $aboutContent->about_image = $value;
                }
                $aboutContent->save();
            }
        } else {
            $aboutContent = About::find($id);
            $aboutContent->title = $request->title[$key];
            $aboutContent->description = $request->description[$key];
            $aboutContent->save();
        }

Answer 2

您可以删除验证器上的about_image条目，然后在Update方法中检查它是否不为空，就像这样：

public function update(Request $request, $id)
{
 $validator = Validator::make($request->all(), $this->custom_rules(), $this->custom_messages());

 if ($validator->fails()){
   return redirect()->route('route_name', $id)->withErrors($validator)->withInput();
 }

 if ($file = $request->file('about_image')){
   $aboutContent->about_image = $file;   
 }
}



private function custom_rules()
{
  $rules = [ 
     'title' => 'required',
     'description' => 'required'
  ];
}

public function custom_messages()
{
  return $messages = [
     'title.required' => 'Title is required.',
     'description.required' => 'Description is required'
  ];
}

Laravel更新要求在保存到数据库之前必须填写所有输入

2 个答案: