No 'Access-Control-Allow-Origin' header - Laravel

If you are using Laravel 5.5 & Laravel 5.x and facing same problem like No 'Access-Control-Allow-Origin' header is present on the requested resource. Just use following package and config your system.

Step 1:

composer require barryvdh/laravel-cors

Step 2

You also need to add Cors\ServiceProvider to your config/app.php providers array:

FruitCake\Cors\CorsServiceProvider::class,

To allow CORS for all your routes, add the HandleCors middleware in the $middleware property of app/Http/Kernel.php class:

For global uses:

protected $middleware = [
    // ...
    \Fruitcake\Cors\HandleCors::class,
];

For middleware uses:

protected $middlewareGroups = [
   'web' => [
       // ...
   ],

   'api' => [
        // ...
        \Fruitcake\Cors\HandleCors::class,
    ],
];

Step 3

Once your installation completed run below command to publish the vendor files.

php artisan vendor:publish --provider="Fruitcake\Cors\ServiceProvider"

Hope this answer helps someone facing the same problem as myself.

I faced this error in laravel 5.4 recently, i was sending ajax post request to my own website, and was still getting this same error, i faced this error due to two reasons to be precise,

error: XMLHttpRequest cannot load https://[mydomain].com/quote/short. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://[mydomain].com' is therefore not allowed access.

The reason for above error was that, i was posting request to http domain from https domain, so when i changed it to https, the error was resolved, then again i got the same error due to similar reason, which was the reason, this time, the domain had www. and the requested one did not, after i added www. to both, it worked like a charm.

And for cross origin requests, i used to following solution:

1. Create a middleware (cors in my case) having code below

   return $next($request)
       ->header('Access-Control-Allow-Origin', '*')
       ->header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
   

2. Insert middle-ware into routeMiddleware array in kernal.php

   'cors' => \App\Http\Middleware\Cors::class,

3. Add middleware to the respected route

   Route::get('myRoute', ['middleware' => 'cors' , 'uses'=> 'MyController@Action']

Hope this answer helps someone facing the same problem as myself.

https://github.com/barryvdh/laravel-cors

The laravel-cors package allows you to send Cross-Origin Resource Sharing headers with Laravel middleware configuration.

Features

Handles CORS pre-flight OPTIONS requests Adds CORS headers to your responses

Laravel restricts the cross origin request due to security issues by default. We need to create a Cors middleware to the accept the request from different origin.

Step 1 : Create Cors middleware.

php artisan make:middleware Cors

Step 2 : Add below lines in handle function before return.

//header('Access-Control-Allow-Origin:  *');
header('Access-Control-Allow-Origin:  http://localhost:4200');
header('Access-Control-Allow-Headers:  Content-Type, X-Auth-Token, Authorization, Origin');
header('Access-Control-Allow-Methods:  POST, PUT');

Step 3 : Register the middileware in app/Http/Kernel.php file.

Add below line in $middleware array 

\App\Http\Middleware\Cors::class,

Step 4 : Now we have to call the middleware in app/Http/Kernel.php file

Add below line in $routeMiddleware array 

'cors' => \App\Http\Middleware\Cors::class,