检查 Laravel 5.1 中是否存在会话密钥？
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Check if session key exists in Laravel 5.1?
提问by AlGallaf
I'm trying to check it a session key has already been set inside a controller. The documentation states that it is possible to check if an item exists in an array and that's it.
我正在尝试检查它是否已在控制器中设置了会话密钥。该文档指出，可以检查数组中是否存在项目，仅此而已。
回答by Tariqul Islam
you can use
您可以使用
if($request->session()->has('key'))
{
}
回答by Baldráni
Has pointed out by @DavidDomain probably the best way of doing it is to use
@DavidDomain 指出最好的方法可能是使用
if(Session::has('...'))
if(Session::has('...'))
Worked like a charm for me.
对我来说就像一种魅力。
回答by Fouad Mekkey
you can use Session::has('YOUR_SESSION_KEY')in both blade and controller
您可以Session::has('YOUR_SESSION_KEY')在刀片和控制器中使用
controller ex:
控制器例如：
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Session;
class add_classController extends Controller
{
public function index(){
if (Session::has('YOUR_SESSION_KEY')){
// do some thing if the key is exist
}else{
//the key does not exist in the session
}
}
}
blade ex:
刀片例如：
@if (Session::has('YOUR_SESSION_KEY'))
{{-- do something with session key --}}
@else
{{-- session key dosen't exist --}}
@endif
回答by Sunjid Shibly
You can do this
你可以这样做
if(Session::has('your_key')){
return $next($request);
}
回答by Seema
if($request->session()->exists('your_key')
{
}
if($request->session()->exists('your_key')
{
}
回答by eskimo
Or shorter, without using the Session Facade: if(session()->exists('key_here'))
或者更短，不使用会话外观： if(session()->exists('key_here'))
