Extend Block

Sometimes a block don’t have all the properties you need. So you want to extend a enhavo block. This is of course possible. You just need to create a entity block class with the doctrine meta data and create a listener that will register the extension meta data to doctrine. At the end you need to configure the current block configuration to use your extended class.

Create custom block

Create your custom Block class. If you use yaml or xml for your doctrine meta data you need to create a separate meta file. If you use annotations just add doctrine annotations to your entity class.

namespace App\Entity\Block;

class TextBlock extends Enhavo\Bundle\BlockBundle\Model\TextBlock
{
    // add your custom properties and functions
}

Add extend listener

Add a doctrine extend listener as a service to the dependency injection container. You have to define the class you want to extend from and the class which extends. This step is needed because you can’t add the meta data for extension to the enhavo TextBlock because you can’t change the vendor files. This Listener will hook into doctrine and set all configuration to make a single table inheritance.

# config/services.yaml

app.block.text.extend_listener:
    class: Enhavo\Bundle\AppBundle\EventListener\DoctrineExtendListener
    arguments:
        - Enhavo\Bundle\BlockBundle\Model\Block\TextBlock
        - App\Entity\Block\TextBlock
        - true
    tags:
        - { name: doctrine.event_subscriber, connection: default }

Extend the current form

You have to create a form for your custom block. Use the getParent to extend the default form. Otherwise you have to redefine all properties inside buildForm.

namespace App\Form\Type\Block;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use App\Entity\Block\TextBlock;

class TextBlockType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        // ... add your property types
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => TextBlock::class
        ]);
    }

    public function getParent()
    {
        return \Enhavo\Bundle\BlockBundle\Form\Type\TextBlockType::class;
    }
}

Change block configuration

Change the block configuration and use your custom classes.

# config/packages/enhavo.yaml

enhavo_block:
    blocks:
        text:
            type: text
            model: App\Entity\Block\TextBlock
            form: App\Form\Type\Block\TextBlockType
            repository: App\Entity\Block\TextBlock