In laravel middleware the parameter request id is missing

I have a Laravel controller with destroying method and middleware with name CheckRole.

public function destroy(Request $request, $id)
{
    // code to delete item
}

I am unable to use the $id in middleware CheckRole.

class CheckRole
{
  public function handle($request, Closure $next)
  {

  }
}

And

$request->id and
$request->route('id')

are also not working with the middleware. How to fix this?

Solution

The $id in the destroy function is the id of the resource you want to delete, so that will never be the authenticated user id a better option for checking the role might be an authorization policy instead of a middleware.

Or get the authenticated user id by using: auth()->id() or $request->user()->id

You can also add a method in your User model, and check like that for example:

class User ...

public function isAdmin()
{
    return $this->role === 'admin';
}

In the middleware

$request->user()->isAdmin();

--- EDIT

So if you use a resource when you defined your route for example:

Route::resource('user', 'UsersController');

Then in your middleware you can access the id of the user like this:

$request->user

If your route is like this:

Route::delete('/users/{user}', 'UsersController@destroy');

Then again you can get it using the named parameter $request->user. Make sure that whatever you use on your route in the {} that's the name of the parameter you use to get the id from.