laravel-验证器的使用

1.这里只是演示一下基本的验证规则

blade用户登陆模板index.blade.php

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>个人测试网页</title>

</head>
<body>
@if(count($errors)>0)
    <div class="alert-danger">
        <ul>
            @foreach($errors->all() as $error)
                <li>{{$error}}</li>
            @endforeach
        </ul>
    </div>
@endif
<form action="{{url('validate')}}"  method="post">
{{csrf_field()}}
        USERNAME:<input type="text" name="username" ><br>
        PASSWORD:<input type="password" name="password"><br>
    <input type="submit" value="提交">

</form>
</body>
</html>
登陆

2.路由

<?php
use Illuminate\Support\Facades\Routete;

Route::get('index',function (){
    return view('index');
});
Route::post('validate','ValidateController@index');
路由

3.控制器中代码（标记的地方也是可以使用的）

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class ValidateController extends Controller
{
    //
    public static  $requet;
  public function __construct(Request $request)
  {
      self::$requet=$request;
  }

    public function index(){

       $rules=['username'=>'required','password'=>'required'];//验证信息
       $message=['username.required'=>'姓名不能为空','password.required'=>'密码不能为空'];//自定义验证中文信息
   //       $data=$this->validate(self::$requet,$rules,$message);

      $data= \Validator::make(self::$requet->except('_token'),$rules,$message);
      if ($data->fails()){
          return redirect('index')->withErrors($data)->withInput();//传统提交表单 页面会刷新，输入框里的内容会丢失掉。//跟old使用

      }

   }

}

4.最终视图

 

posted @ 2020-03-24 22:08  以己为镜  阅读(1647)  评论(0)  编辑  收藏  举报