Laravel 控制器表单验证与Validator类验证

1 控制器表单验证

1.1 控制器

    public function create(Request $request)
    {
        if ($request->isMethod('POST')){
            //web中间件会自动捕获 保存到session中，并显示到view
            $this->validate($request,[
                'Student.name'=>'required|min:2|max:20',
                'Student.age'=>'required|integer',
                'Student.sex'=>'required|integer',
            ],[
                'required'=>':attribute 为必填项',
                'min'=>':attribute 长度太短了',
                'max'=>':attribute 长度太长了',
                'integer'=>':attribute 必须为整数',
            ],[
                'Student.name'=>'姓名',
                'Student.age'=>'年龄',
                'Student.sex'=>'性别',

            ]);
            $data = $request->input('Student');
            if (Student::create($data)){
                return redirect('student/index')->with('success','添加成功');
            }
        }
        return view('student.create');
    }

1.2 要使用到web中间件

Route::group(['middleware'=>['web']],function (){
    Route::any('student/create',['uses'=>'StudentController@create']);
});

 1.3 view

  @include("common.validator")

esourcesviewscommonvalidator.blade.php

@if(count($errors))
    <div class="alert alert-danger">
        <ul>
                <li>{{$errors->first()}}</li>
        </ul>
    </div>

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

 

2 Validator类验证（推荐）

2.1 控制器

//2 Validator类验证
            $validdator = Validator::make($request->input(),[
                'Student.name'=>'required|min:2|max:20',
                'Student.age'=>'required|integer',
                'Student.sex'=>'required|integer',
            ],[
                'required'=>':attribute 为必填项',
                'min'=>':attribute 输入长度太短了',
                'max'=>':attribute 输入长度太长了',
                'integer'=>':attribute 必须为整数',
            ],[
                'Student.name'=>'姓名',
                'Student.age'=>'年龄',
                'Student.sex'=>'性别',

            ]);
            if ($validdator->fails()){
                return redirect()
                    ->back()
                    ->withErrors($validdator)
                    ->withInput();//数据保持
            }

2.2 模板

                <div class="form-group">
                    <label for="name" class="col-sm-2 control-label">姓名</label>

                    <div class="col-sm-5">
                        <input type="text" name="Student[name]" class="form-control" id="name"
                               value="{{old('Student')['name']}}"
                               placeholder="请输入学生姓名">
                    </div>
                    <div class="col-sm-5">
                        <p class="form-control-static text-danger">{{$errors->first('Student.name')}}</p>
                    </div>
                </div>

2.3 展示