How to check the authorization of Laravel

How to check Laravel authorization with an example: learn to use guards & authorization methods to secure your app.

Checking Laravel Authorization

Laravel provides an authorization system to help manage user access to resources and features. This system can be used to ensure that only authorized users can access certain features in Laravel-based applications. In this article, we'll cover how to use Laravel to check authorization.

The most basic way to check for authorization is to use the Gate facade. This facade provides methods for checking if a user is authorized to perform a given action. To check if a user is authorized to perform an action, you can use the allows() method. This method takes a name of the action as the first argument and an array of parameters as the second argument. For example, if you want to check if a user is authorized to view a blog post, you can use the following code:

if (Gate::allows('view-post', $post)) {
    // The user is authorized to view the post.
} else {
    // The user is not authorized to view the post.
}

The Gate facade also provides a denies() method which works similarly to the allows() method. This method can be used to check if a user is not authorized to perform a given action. For example, to check if a user is not authorized to delete a blog post, you can use the following code:

if (Gate::denies('delete-post', $post)) {
    // The user is not authorized to delete the post.
} else {
    // The user is authorized to delete the post.
}

In addition to the allows() and denies() methods, the Gate facade also provides an authorize() method. This method takes a name of the action as the first argument and an array of parameters as the second argument. If the user is not authorized to perform the given action, the authorize() method will throw an AuthorizationException. For example, to check if a user is authorized to edit a blog post, you can use the following code:

try {
    Gate::authorize('edit-post', $post);

    // The user is authorized to edit the post.
} catch (AuthorizationException $e) {
    // The user is not authorized to edit the post.
}

The Gate facade is a powerful tool for managing user authorization in Laravel-based applications. By using the allows(), denies(), and authorize() methods, you can easily check if a user is authorized to perform a given action.