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# Defender

Defender is an Access Control List (ACL) Solution for Laravel 5 / 6 / 7 / 8 / 9 (single auth). (Not compatible with multi-auth)
With security and usability in mind, this project aims to provide you a safe way to control your application access without losing the fun of coding.

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Contribution welcome

Defender is looking for maintainers and contributors.

Installation

1. Dependency

Using composer, execute the following command to automatically update your composer.json, using the corresponding package version:

or manually update your composer.json file

2. Provider

If you are using Laravel >= 5.5 skip this section since our package support auto-discovery.

You need to update your application configuration in order to register the package, so it can be loaded by Laravel. Just update your config/app.php file adding the following code at the end of your 'providers' section:

3. User Class

On your User class, add the trait Artesaos\Defender\Traits\HasDefender to enable the creation of permissions and roles:

If you are using laravel 5.2+, there is a small difference:

4. Publishing configuration file and migrations

To publish the default configuration file and database migrations, execute the following command:

Execute the migrations, so that the tables on you database are created:

You can also publish only the configuration file or the migrations:

Or

If you already published defender files, but for some reason you want to override previous published files, add the --force flag.

5. Facade (optional)

In order to use the Defender facade, you need to register it on the config/app.php file, you can do that the following way:

6. Defender Middlewares (optional)

If you have to control the access Defender provides middlewares to protect your routes. If you have to control the access through the Laravel routes, Defender has some built-in middlewares for the trivial tasks. To use them, just put it in your app/Http/Kernel.php file.

You'll see how to use the middlewares below.

6.1 - Create your own middleware

If the built-in middlewares doesn't fit your needs, you can make your own by using Defender's API to control the access.

Usage

Defender handles only access control. The authentication is still made by Laravel's Auth.

Note: If you are using a different model for your users or has changed the namespace, please update the user_model key on your defender config file

Creating roles and permissions

With commands

You can use these commands to create the roles and permissions for you application.

With the seeder or artisan tinker

You can also use the Defender's API. You can create a Laravel Seeder or use php artisan tinker.

Using the middleware

To protect your routes, you can use the built-in middlewares.

Defender requires Laravel's Auth, so, use the auth middleware before the Defender's middleware that you intend to use.

Checking Permissions: needsPermissionMiddleware

If you're using Laravel 5.1+ it's possible to use Middleware Parameters.

With this syntax it's also possible to use the middleware within your controllers.

You can pass an array of permissions to check on.

When using middleware parameters, use a | to separate multiple permissions.

Or within controllers:

When you pass an array of permissions, the route will be fired only if the user has all the permissions. However, if you want to allow the access to the route when the user has at least one of the permissions, just add 'any' => true.

Or, with middleware parameters, pass it as the 2nd parameter

Or within controllers:

Checking Roles: needsRoleMiddleware

This is similar to the previous middleware, but only the roles are checked, it means that it doesn't check the permissions.

If you're using Laravel 5.1 it's possible to use Middleware Parameters.

With this syntax it's also possible to use the middleware within your controllers.

You can pass an array of permissions to check on.

When using middleware parameters, use a | to separate multiple roles.

Or within controllers:

When you pass an array of permissions, the route will be fired only if the user has all the permissions. However, if you want to allow the access to the route when the user has at least one of the permissions, just add 'any' => true.

Or, with middleware parameters, pass it as the 2nd parameter

Or within controllers:

Using in Views

Laravel's Blade extension for using Defender.

@shield

You can also use wildcard(*)

@is

Using javascript helper

The stand provides helper for when you need to interact with the user permissions on the front-end.

This helper injects a javascript code with all permissions and roles of the current user.

Using the Facade

With the Defender's Facade you can access the API and use it at any part of your application.

Defender::hasPermission($permission):

Check if the logged user has the $permission.

Defender::canDo($permission):

Check if the logged user has the $permission. If the role superuser returns true

Defender::roleHasPermission($permission):

Check if the logged user has the $permission checking only the role permissions.

Defender::hasRole($roleName):

Check if the logged user belongs to the role $roleName.

Defender::roleExists($roleName):

Check if the role $roleName exists in the database.

Defender::permissionExists($permissionName):

Check if the permission $permissionName exists in the database.

Defender::findRole($roleName):

Find the role in the database by the name $roleName.

Defender::findRoleById($roleId):

Find the role in the database by the role ID roleId.

Defender::findPermission($permissionName):

Find the permission in the database by the name $permissionName.

Defender::findPermissionById($permissionId):

Find the permission in the database by the ID $permissionId.

Defender::createRole($roleName):

Create a new role in the database.

Defender::createPermission($permissionName):

Create a new permission in the database.

Defender::is($roleName):

Check whether the current user belongs to the role.

Defender::javascript()->render():

Returns a javascript script with a list of all roles and permissions of the current user. The variable name can be modified.

Using the trait

To add the Defender's features, you need to add the trait HasDefender in you User model (usually App\User).

This trait, beyond configuring the relationships, will add the following methods to your object App\User:

public function hasPermission($permission):

This method checks if the logged user has the permission $permission

In Defender, there are 2 kind of permissions: User permissions and Role permissions. By default, the permissions that the user inherits, are permissions of the roles that it belongs to. However, always that a user pemission is set, it will take precedence of role permission.

public function roleHasPermission($permission):

This method works the same way the previous one, the only diference is that the user permissions are not considered, however, only the role's permissions that the user belongs are used to check the access.

public function attachRole($role):

Attach the user to the role $role. The $role variable might be an object of the type Artesaos\Defender\Role or an array containing the ids of the roles.

public function detachRole($role):

Detach the role $role from the user (inverse to attachRole()).

public function syncRoles(array $roles = array()):

This is like the attachRole() method, but only the roles in the array $roles will be on the relationship after the method runs. $roles is an array of ids for the needed roles.

public function attachPermission($permission, array $options = array()):

Attach the user to the permission $permission. The $permission variable is an instance of the Artesaos\Defender\Permission class.

public function detachPermission($permission):

Remove the permission $permission from the user. The $permission variable might be an instance of the Artesaos\Defender\Permission class or an array of ids with the ids of the permissions to be removed.

public function syncPermissions(array $permissions):

This is like the method syncRoles, but only the roles in the array $permissions be on the relationship after the method runs.

public function revokePermissions():

Remove all the user permissions.

public function revokeExpiredPermissions():

Remove all the temporary expired pemissions from the user. More about temporary permissions below.

Temporary permissions

One of Defender's coolest features is to add temporary permissions to a group or an user.

For example

The user John belongs to the role 'admins', however I want to temporaly remove the John's permission to create new users

In this case we need to attach an permission with the value equal to false, explicitly prohibiting the user to perform that action. You must add this permission, with the false value, since by default, the user permissions are inherited of the permissions of their roles. When you assign a user permission, this will always take precedence.

For instance. Below we revoke the permission user.create for the user during 7 days.

After 7 days, the user will take the permission again.

Allow that a user can perform some action by a period of time.

To allow that a user have temporary access to perform a given action, just set the expires key. The value key will be true by default.

It's also possible to extend an existing temporary: Just use the $user->extendPermission($permissionName, array $options) method.

Using custom Role and Permission models

To use your own classes for Role and Permission models, first set the role_model and permission_model keys at defender.php config.

Following are two examples of how Role and Permission models must be implemented for MongoDB using jenssegers/laravel-mongodb driver:

You must use the correct traits and each class has to implemet the corresponding interface contract.