Php custom annotation

Create and work with custom php annotation with pleasure.

Installation

Step 1: Download the Bundle Open a command console, enter your project directory and execute the following command to download the latest stable release for this bundle: $ composer require beerline/php-custom-annotations

Step 2: Enable the Bundle For Symfony declare new service at config/services.yaml

    services:
      // Your services here
      Beerline\PhpCustomAnnotations\Metadata\PropertyMetadataPicker:
        class: 'Beerline\PhpCustomAnnotations\Metadata\PropertyMetadataPicker'

How to use

To add metadata to property of your class:

1. Create metadata class.
2. Add annotation @Annotation and @Annotation\Target("PROPERTY") to metadata class.
3. Annotate property of your class by metadata class.
4. Use Beerline\PhpCustomAnnotations\Metadata\PropertyMetadataPicker::findPropertiesAllMetadata( object $entity ) to get array of all annotation of all property of given class.
5. Use Beerline\PhpCustomAnnotations\Metadata\PropertyMetadataPicker::findPropertyCertainMetadata( object $entity, string $metadataClassName ) method to get only properties with specific metadata class. $metadataClassName is name of metadata class

Examples

Imagine we have Product class.

    class Product
    {
      /** @var int */
      private $id;
      
      /** @var \DateTime */
      private $dateProduction;
      
      /**
       * @var string
       * @Translate(translatable=true)
       */
      private $name;
      
      /**
       * @var string
       * @Translate(translatable=true)
       */
      private $description;
      
      public function __construct( string $name, DateTime $date, string $description)
      {
          $this->name = $name;
          $this->dateProduction = $date;
          $this->description = $description;
      }
    }

Some of it’s properties should be translated:

• name
• description

To specify which properties should be translated lets create metadata Class called Translatable

    /**
     * @Annotation
     * @Annotation\Target("PROPERTY")
     */
    class Translatable
    {
      /**
       * @Required
       * @var boolean
       */
      public $translatable;
    }

Now mark properies name and description by metadata class

    // ...
        /**
         * @var string
         * @Translatable(translatable=true)
         */
        private $name;
      
        /**
         * @var string
         * @Translatable(translatable=true)
         */  
        private $description
    // ...

That all. All you need now it is use PropertyMetadataPicker to get this properties

    <?php
    use Doctrine\Common\Annotations\AnnotationReader;
    use Beerline\PhpCustomAnnotations\Metadata\PropertyMetadataPicker;
    
    $product = new Product( 'iPhone', now(), 'Designed by Apple in California' );
    $propertyMetadataPicker = new PropertyMetadataPicker( new AnnotationReader() );
    
    $propertiesMetadata = $propertyMetadataPicker->findPropertyCertainMetadata(
        $product,
        Translatable::class
    );
    
    foreach ($propertiesMetadata as $property) {
         foreach ($property->getMetadataClass() as $metadataClass){
             if ( $metadataClass instanceof Translate) {
                 echo  $property->getPropertyName() . ': ' . $metadataClass->translatable . "\n";
             }
         }
    }

// result
// name: 1
// description: 1