php Laravel - 检查是否有 Ajax 请求

Laravel - check if Ajax request

提问by Raheel

I have been trying to find a way to determine ajax call in Laravel but i don't find any document regarding it.

我一直试图找到一种方法来确定 Laravel 中的 ajax 调用，但我没有找到任何关于它的文档。

I have a index()function which i want to handle situation differently based on the nature of request. Basically this is a resource controller method that is bound to GET request.

我有一个index()功能，我想根据请求的性质以不同的方式处理情况。基本上这是一个绑定到 GET 请求的资源控制器方法。

public function index()
    {
        if(!$this->isLogin())
            return Redirect::to('login');

        if(isAjax()) // This is what i am needing.
        {
          return $JSON;
        }

        $data = array();
        $data['records'] = $this->table->fetchAll();

        $this->setLayout(compact('data'));
    }

I know the other methods of determining the Ajax request in PHP but i want something specific to Laravel.

我知道在 PHP 中确定 Ajax 请求的其他方法，但我想要一些特定于 Laravel 的方法。

Thanks

谢谢

Updated:

更新：

I tried using

我尝试使用

 if(Request::ajax())
    {
        echo 'Ajax';
    }

But i am receiving error : Non-static method Illuminate\Http\Request::ajax() should not be called statically, assuming $this from incompatible context

但我收到错误： Non-static method Illuminate\Http\Request::ajax() should not be called statically, assuming $this from incompatible context

The class shows that this is not a static method.

该类表明这不是静态方法。

回答by Crack_David

Maybe this helps. You have to refer the @param

也许这有帮助。你必须参考@param

         /**       
         * Display a listing of the resource.
         *
         * @param  Illuminate\Http\Request $request
         * @return Response
         */
        public function index(Request $request)
        {
            if($request->ajax()){
                return "AJAX";
            }
            return "HTTP";
        }

回答by Jnanaranjan

To check an ajax request you can use if (Request::ajax())

要检查您可以使用的 ajax 请求 if (Request::ajax())

Note: If you are using laravel 5, then in the controller replace

注意：如果您使用的是 Laravel 5，则在控制器中替换

use Illuminate\Http\Request;

with

和

use Request; 

I hope it'll work.

我希望它会起作用。

回答by lukasgeiter

You are using the wrong Requestclass. If you want to use the Facade like: Request::ajax()you have to import this class:

您使用了错误的Request类。如果你想像这样使用 Facade：Request::ajax()你必须导入这个类：

use Illuminate\Support\Facades\Request;

And not Illumiante\Http\Request

并不是 Illumiante\Http\Request

---

---

Another solution would be injecting an instance of the real request class:

另一种解决方案是注入真实请求类的实例：

public function index(Request $request){
    if($request->ajax()){
        return "AJAX";
    }

(Now here you have to import Illuminate\Http\Request)

（现在你必须导入Illuminate\Http\Request）

回答by Илья Зеленько

$request->wantsJson()

$request->wantsJson()

You can try $request->wantsJson()if $request->ajax()does not work

$request->wantsJson()如果$request->ajax()不起作用，您可以尝试

$request->ajax()works if your JavaScript library sets an X-Requested-With HTTP header.

$request->ajax()如果您的 JavaScript 库设置了 X-Requested-With HTTP 标头，则有效。

By default Laravel set this header in js/bootstrap.js

默认情况下，Laravel 在 js/bootstrap.js 中设置这个头文件

window.axios = require('axios');

window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';

In my case, I used a different frontend code and I had to put this header manually for $request->ajax()to work.

在我的例子中，我使用了不同的前端代码，我不得不手动放置这个标题$request->ajax()才能工作。

But $request->wantsJson()will check the axios query without the need for a header X-Requested-With:

但是$request->wantsJson()会检查 axios 查询而不需要标题X-Requested-With：

// Determine if the current request is asking for JSON. This checks Content-Type equals application/json.
$request->wantsJson()
// or 
\Request::wantsJson() // not \Illuminate\Http\Request

回答by Matthew Way

if(Request::ajax()) 

Looks to be the right answer. http://laravel.com/api/5.0/Illuminate/Http/Request.html#method_ajax

看起来是正确的答案。 http://laravel.com/api/5.0/Illuminate/Http/Request.html#method_ajax

回答by Justin

For those working with AngularJSfront-end, it does not use the Ajax header laravel is expecting. (Read more)

对于那些使用AngularJS前端的人来说，它不使用 laravel 期望的 Ajax 标头。（阅读更多）

Use Request::wantsJson()for AngularJS:

对 AngularJS使用Request::wantsJson()：

if(Request::wantsJson()) { 
    // Client wants JSON returned 
}

回答by lee shin

Those who prefer to use laravel helpers they can check if a request is ajax using laravel request()helper.

那些喜欢使用 laravel helper 的人可以使用 laravel helper 检查请求是否是 ajax request()。

if(request()->ajax())
   // code

回答by Nagibaba

Sometimes Request::ajax()doesn't work, then use \Request::ajax()

有时Request::ajax()不起作用，然后使用\Request::ajax()

回答by Nagibaba

public function index()
{
    if(!$this->isLogin())
        return Redirect::to('login');

    if(Request::ajax()) // This is check ajax request
    {
      return $JSON;
    }

    $data = array();
    $data['records'] = $this->table->fetchAll();

    $this->setLayout(compact('data'));
}

回答by Muhammad Awais

after writing the jquery code perform this validation in your route or in controller.

编写 jquery 代码后，在您的路由或控制器中执行此验证。

$.ajax({
url: "/id/edit",
data:
name:name,
method:'get',
success:function(data){
  console.log(data);}
});

Route::get('/', function(){
if(Request::ajax()){
  return 'it's ajax request';}
});