HalloVerdenFeatureFlagBundle

Ability to activate and deactivate features dynamically.

Installation

Make sure Composer is installed globally, as explained in the installation chapter of the Composer documentation.

Applications that use Symfony Flex

Open a command console, enter your project directory and execute:

$ composer require halloverden/symfony-feature-flag-bundle

Applications that don't use Symfony Flex

Step 1: Download the Bundle

Open a command console, enter your project directory and execute the following command to download the latest stable version of this bundle:

$ composer require halloverden/symfony-feature-flag-bundle

Step 2: Enable the Bundle

Then, enable the bundle by adding it to the list of registered bundles in the config/bundles.php file of your project:

// config/bundles.php

return [
    // ...
    HalloVerden\FeatureFlagBundle\HalloVerdenFeatureFlagBundle::class => ['all' => true],
];

Usage

Create an entity representing your feature.

<?php

namespace App\Entity\FeatureFlag;

use Doctrine\ORM\Mapping as ORM;
use HalloVerden\FeatureFlagBundle\Entity\FeatureFlag;

/**
 * Class TestFeatureFlag
 *
 * @package App\Entity\FeatureFlag
 *
 * @ORM\Entity()
 */
class TestFeatureFlag extends FeatureFlag {

  /* If you add additonal properties, override setFromConsole */

  /**
   * @inheritDoc
   */
  public static function getType(): string {
    return 'TEST';
  }

}

Create and run migration for your new FeatureFlag

bin/console doctrine:migrations:diff
bin/console doctrine:migrations:migrate

Create the FeatureFlag

bin/console feature-flag:create TEST

Activate feature

bin/console feature-flag:activate TEST

Deactivate feature

bin/console feature-flag:dectivate TEST

Check if feature is activated:

<?php

namespace App\Services;

use App\Entity\FeatureFlag\TestFeatureFlag;
use HalloVerden\FeatureFlagBundle\Services\FeatureFlagServiceInterface;

class SomeService {
  private FeatureFlagServiceInterface $featureFlagService;

  public function __construct(FeatureFlagServiceInterface $featureFlagService) {
    $this->featureFlagService = $featureFlagService;
  }
  
  public function test(): void {
    if (!$this->featureFlagService->isActive(TestFeatureFlag::class)) {
      return; // or throw an exception
    }
    
    // Do the thing that requires this feature to be active.
  }
}