Custom Permission Check

##Default Permission Check Functionality

By default, this package registers a Gate::before() method call on Laravel's gate. This method is responsible for checking if the user has the required permission or not, for calls to can() helpers and most model policies. Whether a user has a permission or not is determined by checking the user's permissions stored in the database.

In the permission config file, register_permission_check_method is set to true, which means this package operates using the default behavior described above. Only set this to false if you want to bypass the default operation and implement your own custom logic for checking permissions, as described below.

##Using Custom Permission Check Functionality

However, in some cases, you might want to implement custom logic for checking if the user has a permission or not.

Let's say that your application uses access tokens for authentication and when issuing the tokens, you add a custom claim containing all the permissions the user has. In this case, if you want to check whether the user has the required permission or not based on the permissions in your custom claim in the access token, then you need to implement your own logic for handling this.

You could, for example, create a Gate::before() method call to handle this:

app/Providers/AuthServiceProvider.php

public function boot()
{
    ...

    Gate::before(function ($user, $ability) {
        return $user->hasTokenPermission($ability) ?: null;
    });
}

Here hasTokenPermission is a custom method you need to implement yourself.