CODEWITHSUNDEEP
symfonydoctrine-orm
Mathieu
Mathieu

Reputation: 1082

Symfony2 listener class not loading?

I am struggling with something that may sound stupid but :

I created a listener class that add content to Lucene Search Index after an entity is persisted.

My config.yml : 

services:
searchindexer.listener:
    class: ripr\WfBundle\Listener\SearchIndexer
    tags:
        - { name: doctrine.event_listener, event: postPersist }

My file is in src/ripr/WfBundle/Listener

Filename is SearchIndexer.php

Class name is SearchIndexer

Namespace is ripr\WfBundle\Listener

I get an error on this line

$index = $this->get('ivory_lucene_search')->getIndex('identifier1');

error :

Fatal error: Call to a member function get() on a non-object

This sounds to me that class is not loaded. I can't get where I am wrong.

I flush dev cache multiples times.

This precise line works perfectly when I call it inside a classic Controller.

--------Edited--------

My class code to help

 <?php

namespace ripr\WfBundle\Listener;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Doctrine\ORM\Event\LifecycleEventArgs;
use ripr\WfBundle\Entity\Item;
use Ivory\LuceneSearchBundle\Model\Document;
use Ivory\LuceneSearchBundle\Model\Field;

/**
 * Search indexer.
 *
 * 
 */

class SearchIndexer extends Controller
 {

    /**
     * Index content
     *
     */
    public function postPersist (LifeCycleEventArgs $args) {

        //  $luceneSearch = $this->get('ivory_lucene_search');
        //  $luceneSearch->eraseIndex('identifier1');

            $entity = $args->getEntity();
            $entityManager = $args->getEntityManager();

            // perhaps you only want to act on some "Product" entity


                $index = $this->get('ivory_lucene_search')->getIndex('identifier1');
                $document = new Document();
                $document->addField(Field::text('titre', 'bille'));
                $document->addField(Field::text('texte', 'billou'));
            // Add your document to the index
                $index->addDocument($document);
                $index->commit();






    }

}

Upvotes: 0

Views: 820

Answers (1)

Problematic
Problematic

Reputation: 17678

This is happening because you don't have access to the container inside your listener class by default. However, don't just extend your class from Controller (which does have access to the container) or inject the entire container. Instead, inject only the services you need into it:

config.yml:

services:
  searchindexer.listener:
    class: ripr\WfBundle\Listener\SearchIndexer
    arguments:
      luceneSearch: "@ivory_lucene_search"
    tags:
      - { name: doctrine.event_listener, event: postPersist }

SearchIndexer.php:

class SearchIndexer
{
    protected $luceneSearch;

    public function __constructor($luceneSearch)
    {
        $this->luceneSearch = $luceneSearch;
    }

    // ...

Then, anywhere you need to use the lucene search inside the listener, you can simply call $this->luceneSearch.

Upvotes: 3

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