php - 如何从 Controller 获取记录到 Ajax laravel 5.2

Question

问候和尊重我希望当我在数据库表中记录要更新的记录时，但不幸的是我没有做任何无法获取 ID 并注入(inject) AJAX 和 AJAX 的事情，我想要 Controller 和数量之间的关系我从数据库和表中读取。

我的 Controller :

    public function index()
{
    $category = Category::all();
    return view('admin.category', compact('category'));
}
public function indexAjax(messageRequest $request){
    $id=$request->id;
    $category=Category::where('id',$id)->first();
    $data=array('data'=>$category);
    return $data;
}
public function create(messageRequest $request)
{
    try {
        Category::create($request->all());
        return response()->json(array('sms'=>'save'));
    }catch (Exception $e){
        return response()->json(array('err'=>'error'));
    }
}

我的路线:

Route::group(['middleware' => 'web'], function () {
Route::auth();
Route::get('category',['uses'=>'categoryController@index']);
});
Route::group(['middleware' => 'web'], function () {
Route::auth();
Route::get('categoryAjax',    ['as'=>'categoryAjax','uses'=>'categoryController@indexAjax']);
});

脚本:

            <script>
            $('#submit').on('click', function (e) {
                e.preventDefault();
                var data = $('#create').serialize();
                $.ajax({
                    type: 'post',
                    url: '{!! URL::route('category') !!}',
                    data: data,
                    success: function (data) {
                        alert(data.sms);
                    },
                    error: function () {
                        alert(data.err);
                    }
                });
                $.ajax({
                    type: 'GET',
                    url: '{!! URL::route('categoryAjax') !!}',
                    async: false,
                    dataType: 'json',
                    data: data,
                    success: function (data) {
                        alert(data.data);
                    }
                });
            });
            $.ajaxSetup({
                headers: {
                    'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
                }
            });
        </script>

我将 alert(data.data) 更改为 alert('hi) 但没有运行 :(改变了:

                    $.ajax({
                    type: 'GET',
                    url: '{!! URL::route('categoryAjax') !!}',
                    async: false,
                    dataType: 'json',
                    data: data,
                    success: function (data) {
                        alert('hi');
                    }
                });

我的 Ajax 方法 POST:

                    $.ajax({
                    type: 'post',
                    url: '{!! URL::route('category') !!}',
                    data: data,
                    success: function (data) {
                        alert(data.sms);
                    },
                    error: function () {
                        alert(data.err);
                    }
                });

我的 Controller POST 方法:

    public function create(messageRequest $request)
{
    try {
        Category::create($request->all());
        return response()->json(array('sms'=>'save'));
    }catch (Exception $e){
        return response()->json(array('err'=>'error'));
    }
}

我的路由 POST 方法:

Route::group(['middleware' => 'web'], function () {
Route::auth();
Route::post('category', ['as' => 'category',  'uses' => 'categoryController@create']);
});

Answer 1

在 Laravel 5.2 中，中间件有 web、api 和 auth。如果要使用ajax发送数据，就要使用带token的api中间件。你可以看到这个引用:

• https://mattstauffer.co/blog/multiple-authentication-guard-drivers-including-api-in-laravel-5-2
• https://gistlog.co/JacobBennett/090369fbab0b31130b51

首先，给用户添加一个api_token:

您首先想到的是向您的用户表添加一个 api_token 列。如果您刚刚启动您的应用程序，您可能会修改 Laravel 附带的用户迁移以包含您的新列。

// add this to your users_table migration
$table->string('api_token', 60)->unique();

Controller :

public function upload()
{
    return view('uploads.upload', ['api_token' => Auth::user()->api_token]);
}

查看:

<script>
    $(function () {
        'use strict';

        var url = '/api/photos?api_token={{ $api_token }}';

        // Initialize the jQuery File Upload widget:
        $('#fileupload').fileupload({
            // Uncomment the following to send cross-domain cookies:
            // xhrFields: {withCredentials: true},
            url: url
        });      
</script>

路线:

Route::group(['middleware' => ['auth:api']], function () {
    Route::post('api/photos', 'FileController@storeApi');
});