Laravel 修改操作

增加路由：

Route::any('Student/update/{id}',['uses'=>'StudentController@update']);

控制器代码：（Request $request不会影响参数）

public function update(Request $request,$id){
    $student = Student::find($id);
    if($request->isMethod('POST')){
        //验证通过后继续进行
        //方法2 Validator类验证
        $validator = \Validator::make($request->input(),[
            'Student.name' => 'required|min:2|max:20',
            'Student.age' => 'required|integer',
            'Student.gender' => 'required|integer',
        ],[
            'required'=>':attribute 为必填项',
            'min' => ':attribute 长度不符合要求',
            'integer' => ':attribute 必须是一个整形',
        ],[ 'Student.name' => '姓名',
            'Student.age' => '年龄',
            'Student.gender' => '性别',
        ]);
        if($validator->fails()){
            return redirect()->back()->withErrors($validator)->withInput();
        }
        //如果验证通过，则继续执行下面的代码
        $data = $request->input('Student');
        $student->name = $data['name'];
        $student->age = $data['age'];
        $student->gender = $data['gender'];
        if($student->save()){
            return redirect('Student/index')->with('success','修改成功');
        }else{
            return redirect()->back();
        }
    }
    return view('Student.update',[
        'student'=>$student
    ]);
}
列表视图的代码：

<a href="{{ url('Student/update',['id'=>$val->id]) }}">编辑</a>
 
修改页面代码：

<form method="post" action="{{ url('Student/update',['id'=>$student->id]) }}">
    {{ csrf_field() }}
    姓名 ：<input type="text" name="Student[name]" value="{{ old('Student')['name']?old('Student')['name']:$student->name }}" />
    年龄 ：<input type="text" name="Student[age]" value="{{ old('Student')['age']?old('Student')['name']:$student->age }}" />
    性别 ：
    @foreach($student->user_sex() as $ind=>$val)
    <input type="radio" name="Student[gender]" value="{{$ind}}" {{ (old('Student')['gender']?old('Student')['gender']:$student->gender)==$ind?'checked':'' }} />{{$val}}
    @endforeach
    <input type="hidden" name="Student[id]" value="{{$student->id}}">
    <input type="submit" value="提交"/>
</form>