laravel之表单篇

一、Controller介绍

1) Controller之Request

        laravel中的请求使用的是symfony/http-foundation组件
        请求里面存放了$_GET $_POST $_COOKIE $_FILES $_SERVER等数据

        eg1:
            use Illuminate\Http\Request;
            class ExampleController extends Controller {
                public function request1(Request $request) {
                    #1: 取值
                        echo $request->input('name');                                      //获取参数
                        echo $request->input('sex', '未获取到数据，这是默认值');            //如果没有这个参数，将采用默认值
                        echo $request->has('sex') ? $request->input('sex') : '无参数' ;    //判断是否存在这个参数，存在输出，否则默认值
                        $request->all();                                                   //获取所有的参数

                    #2: 判断请求类型
                        var_dump($request->method());                                     //请求类型
                        var_dump($request->isMethod('GET'));                              //是否是get请求
                        var_dump($request->ajax());                                       //是否是ajax请求
                        var_dump($request->is('student/*'));                              //判断访问路劲是否是这个
                        var_dump($request->url());                                        //获取当前的url
                }
            }

        eg2:
            namespace App\Http\Controllers;
            use Illuminate\Http\Request;
            class UploadController extends Controller {
                public function save(Request $request) {
                    echo $request->input('file');
                }
            }

            Route::any('upload/save', 'UploadController@save');

            <form action="upload/save" method="post">
                {{ csrf_field() }}
                <input type="text" name="file" value="123">
                <input type="submit" value="提交">
            </form>

        eg3:
            namespace App\Http\Controllers;
            use Illuminate\Http\Request;
            class RbacController extends BaseController
            {
                public function roleset(Request $request)
                {
                    echo json_encode($request->input('rolename'));
                }
            }

            $.ajax({
                type: 'POST',
                url: '/roleset',
                data: { rolename : $('#rolename').val()},
                dataType: 'json',
                headers: {
                    'X-CSRF-TOKEN': "{{ csrf_token() }}"
                },
                success: function(data){

                }
            });

            Route::any('/roleset', 'RbacController@roleset');

2) Controller之Session

        laravel中session三种使用方式：
        a: HTTP request类的session()方法
        b: session()辅助函数
        c: Session facade

Controller之Response

Controller之Middleware