How to Resolve the ‘Class IpLimit Does Not Exist’ Error in Laravel Middleware

When Laravel reports “Class IpLimit does not exist”, the most common cause is an incorrect class name or case mismatch; verify the spelling and case exactly.

Create a new middleware class (e.g., php artisan make:middleware IpLimit) and place the logic inside its handle method.

In the handle method, check whether the user is logged in and is an administrator; if not, redirect them to the home page.

Define a helper method to determine if the current user has admin privileges.

Register the middleware in app/Http/Kernel.php with a key, for example 'admin': 'admin' => \App\Http\Middleware\IpLimit::class, When defining routes, use the prefix option for a common URL prefix and the middleware option with the key you defined:

Route::group(['prefix' => 'admin', 'middleware' => 'admin'], function () {
    // routes here
});

Store an admin flag in the database (e.g., a boolean column) to identify administrators.

After setting up the middleware and routes, accessing a protected route as a non‑admin user will redirect to the home page, confirming the middleware works.

Additional examples:

Register a single middleware on a route:

Route::get('profile', ['middleware' => 'auth', 'uses' => 'ProfileController@show']);

Assign multiple middleware to a route:

Route::get('/', ['middleware' => ['first', 'second'], function () {
    //
}]);

Group several routes under a common middleware:

Route::group(['middleware' => 'auth'], function () {
    Route::get('/guarantee', 'Home\UserController@guarantee');
    Route::get('/securitycode', 'Home\UserController@securityCode');
});