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驗證錯誤消息未顯示 Laravel 5.4

[英]validation error message not showing laravel 5.4

消息.blade.php

@if(count($errors) > 0)
@foreach($errors->all() as $error)
    <div class="alert alert-danger">
        {{$error}}
    </div>
@endforeach
@endif

主刀片.php

<body class="nav-md">
<div class="container body">
    @include('messages')
  <div class="main_container">

添加信息控制器

public function store(Request $request)
{
  $this->validate($request,[
    'fileno' => 'required|unique:AddInfoModel|max:255',
  ]);

輸入名稱 = 文件號 我試圖在單擊提交后將文件號字段保留為空文件沒有顯示錯誤

如果通過ajax函數發布日期,可能就是為什么不顯示錯誤或任何其他錯誤。如果是這種情況,如何整理表格?

在控制器中進行驗證並返回錯誤消息以查看

$validator = Validator::make($request->all(), [
             'first_name' => 'required|max:255',
             'last_name' => 'required|max:255',
             'email' => 'required|email|max:255'
        ]);

        if ($validator->fails()) {
            return back()->withErrors($validator->errors())
                         ->withInput($request->all());
        }

//控制器代碼

$validator = $this->validate($request->all(), [
    'title' => 'required|unique:posts|max:255',
    'body' => 'required',
]);

if ($validator->fails()) {
    return back()->withErrors($validator->errors())
        ->withInput($request->all());
}

//查看代碼

@if($errors->has())
    @foreach ($errors->all() as $error)
        <div>{{ $error }}</div>
    @endforeach
@endif

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