Laravel之简单的学生信息管理平台

//这是路由文件的关键代码
Route::group([‘middleware‘ => [‘web‘]], function () {
    Route::get(‘student/index‘,[‘uses‘=>‘StudentController@index‘]);
    Route::any(‘student/create‘,[‘uses‘=>‘StudentController@create‘]);
    Route::post(‘student/save‘,[‘uses‘=>‘StudentController@save‘]);
    Route::any(‘student/update/{id}‘,[‘uses‘=>‘StudentController@update‘]);
    Route::any(‘student/detail/{id}‘,[‘uses‘=>‘StudentController@detail‘]);
    Route::any(‘student/delete/{id}‘,[‘uses‘=>‘StudentController@delete‘]);
});

//控制器文件的关键代码,增删改查
class StudentController extends  Controller{
    //学生列表
    public function  index(){
        $students = Student::paginate(20);

        //dd($students);
        return view(‘student.index‘,[
            ‘students‘=>$students,
        ]);
    }

    //新增页面
    public function create(Request $request){
        $student = new Student();

        if($request->isMethod(‘POST‘)){

            //1.控制器验证
            /*$this->validate($request,[
               ‘Student.name‘=>‘required|min:2|max:20‘,
               ‘Student.age‘ =>‘required|integer‘,
               ‘Student.sex‘ =>‘required|integer‘,
            ],[
                ‘required‘=>‘:attribute 为必填项‘,
                ‘min‘=>‘:attribute长度不符合要求‘,
                ‘integer‘=>‘:attribute必须为整数‘,
            ],[
                ‘Student.name‘=>‘姓名‘,
                ‘Student.age‘ =>‘年龄‘,
                ‘Student.sex‘ =>‘性别‘
            ]);*/

            //2.Validator类验证
            $validator = \Validator::make($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长度不符合要求‘,
                ‘integer‘=>‘:attribute必须为整数‘,
            ],[
                ‘Student.name‘=>‘姓名‘,
                ‘Student.age‘ =>‘年龄‘,
                ‘Student.sex‘ =>‘性别‘
            ]);

            //withInput保持数据
            if($validator->fails()){
                return redirect()->back()->withErrors($validator)->withInput();
            }

            $data = $request->input(‘Student‘);
            if(Student::create($data)){
                return redirect(‘student/index‘)->with(‘success‘,‘添加成功‘);
            }else{
                return redirect()->back();
            }
        }

        return view(‘student.create‘,[
            ‘student‘=>$student,
        ]);
    }

    //保存数据操作
    public function save(Request $request){
        $data = $request->input(‘Student‘);
        $student = new Student();
        $student->name = $data[‘name‘];
        $student->age = $data[‘age‘];
        $student->sex = $data[‘sex‘];
        if($student->save()){
            return redirect(‘student/index‘);
        }else{
            return redirect()->back();
        }
    }

    //更新数据操作
    public function update(Request $request,$id){
        $student = Student::find($id);

        if($request->isMethod(‘POST‘)){
            //Validator类验证
            $validator = \Validator::make($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长度不符合要求‘,
                ‘integer‘=>‘:attribute必须为整数‘,
            ],[
                ‘Student.name‘=>‘姓名‘,
                ‘Student.age‘ =>‘年龄‘,
                ‘Student.sex‘ =>‘性别‘
            ]);

            //withInput保持数据
            if($validator->fails()){
                return redirect()->back()->withErrors($validator)->withInput();
            }

            $data = $request->input(‘Student‘);
            $student->name = $data[‘name‘];
            $student->age  = $data[‘age‘];
            $student->sex  = $data[‘sex‘];
            if($student->save()){
                return redirect(‘student/index‘)->with(‘success‘,‘修改成功-‘.$id);
            }
        }

        return view(‘student.update‘,[
            ‘student‘=>$student,
        ]);
    }

    //信息详情
    public function detail($id){
        $student = Student::find($id);
        return view(‘student.detail‘,[
            ‘student‘=>$student,
        ]);
    }

    //删除操作
    public function delete($id){
        $student = Student::find($id);
        if($student->delete()){
            return redirect(‘student/index‘)->with(‘success‘,‘删除成功-‘.$id);
        }else{
            return redirect(‘student/index‘)->with(‘error‘,‘删除失败-‘.$id);
        }
    }
}