Laravel Feature Flag is an awesome package for Laravel using Atriedes/feature library. This package provides the ability to toggle features (by users, groups, random, etc.) using Laravel Authorization.

Installation

You can install this package by using composer:

composer require "friendsofcat/laravel-feature-flag"

Add the following to your config/app.php providers array:

FriendsOfCat\LaravelFeatureFlags\FeatureFlagsProvider::class,

Add the following to your config/app.php providers array:

php artisan vendor:publish --provider="FriendsOfCat\LaravelFeatureFlags\FeatureFlagsProvider" --tag='migrations'

Then run the migration to set up the base table:

php artisan migrate

Usage

Visit /admin/feature_flags to manage features via the UI.

Checking if a feature flag exists

For this you can use the exists() method

if(\FriendsOfCat\LaravelFeatureFlags\Feature::exists('see-twitter-field'))
{
  //do something
}

Enable for User Roles

You can enable a feature flag for specific user roles, by using the roles variant in the configuration form

i.e.

{ "roles": ["admin", "dev"]}

If you don’t have a roles property in your User model, you just need to implement the FeatureFlagsEnabler Interface and use FeatureFlagUserRoleTrait

use FriendsOfCat\LaravelFeatureFlags\FeatureFlagsEnabler;
use FriendsOfCat\LaravelFeatureFlags\FeatureFlagUserRoleTrait;

class User extends Authenticatable implements FeatureFlagsUserRoles
{
    use AuthenticableTrait, FeatureFlagUserRoleTrait;
}

Enable for User Teams

You can enable a feature flag for specific user teams, by using the teams variant in the configuration form

i.e.

{ "teams": ["Team 1", "Team 2"]}

If you don’t have a teams property in your User model, you just need to implement the FeatureFlagsEnabler Interface and use FeatureFlagUserRoleTrait

use FriendsOfCat\LaravelFeatureFlags\FeatureFlagsEnabler;
use FriendsOfCat\LaravelFeatureFlags\FeatureFlagUserRoleTrait;

class User extends Authenticatable implements FeatureFlagsUserRoles
{
    use AuthenticableTrait, FeatureFlagUserRoleTrait;
}

Syncing Flags

Feature flags can be synchronized using the provided feature-flag:sync command. This will sync flags defined in the sync_flags configuration in the laravel-feature-flag.php config file. The format for this flag configuration is key => default value. By default, any flags that are removed will be removed from storage. There is a –skip-cleanup flag available to skip this step.

Demo / Example
If you want to try the demo/example also include the following in your config/app.php providers array:

FriendsOfCat\LaravelFeatureFlags\ExampleFeatureProvider::class

and then run:

php artisan vendor:publish --provider="FriendsOfCat\LaravelFeatureFlags\ExampleFeatureProvider" --tag='migrations'
php artisan migrate

It has a rollback to help clean up after.

There is a dummy route called /admin/feature_flags/example that you can visit and it will show that it is not on. But if you then go to the admin UI /admin/feature_flags you can toggle it on and off.

Closing Note

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