Symfony2 form type nested too many queries - forms

Question

I am developing a webshop system and currently I am working at the admin tools. I've got 4 related entities
Articles
stores main article data (name, description)
ArticleSuppliers
stores variants data (articleNumber, price..)
ArticleAttributesValues
stores attributes for each variant (value e.g. red, 40cm)
ArticleAttributes
stores names of attributes (color, height...)
Since it's much easier to edit a product, I would like to merge the forms together which is working.
ArticlesType binds ArticleSuppliersType binds ArticleAttributesValuesType
My FormType: ArticleAttributesValues contains an entity choice of ArticleAttributes
This is working! But there is a huge problem. I display each variant with their attributes so there is a query for each attribute (imagine a product with 20 variants and 10 attributes).
The solution would be easy: I just need to give an array of attributeNames + id to my FormType, but I do not know how this is done.
I would be grateful for every other solution though.
Thank you in advance!
EDIT:
I will try to explain my problem with code:
// controller
$article = $em->getRepository('MyBundle:Articles')->find($id);
$form = $this->createForm(new ArticleType(), $article);
This is my article type:
// articleType
$builder->add('shortName', 'text',
array('label' => false))
->add('shortDescription', 'text',
array('label' => false))
->add('longDescription', 'textarea',
array('label' => false))
->add('variants', 'collection', array('type' => new VariantsType()))
->add('save', 'submit', array('label' => 'Save'));
This relates to VariantsType:
// variantsType
$builder->add('supplierArticleNumber', 'text',
array('label' => false))
->add('price', 'text',
array('label' => false))
->add('variantvalues', 'collection', array('type' => new VariantsvaluesType()));
This relates to VariantsvaluesType, where my choice field is.
// variantsvaluesType
$builder->add('attributeValue', 'text',
array('label' => false))
->add('attributeUnit', 'text',
array('label' => false, 'required' => false))
->add('attrName', 'entity', array(
'class' => 'MyBundle:ArticleAttributes',
'property' => 'attributeName',
));
This choice field is the same (of course there are changes sometimes), so it would be unnecessary to query it X-times...
My idea was to load all attributeNames in my controller and pass it via $options to variantsvaluesType, but this is not working...

Answer 1

I see, well maybe you can try the next idea. Create a service with a get function for each collection to load, then in the constructor of the service you can load all the list only one time. Then you can use that service wherever you needed. It must work like a singleton. The inconvenience is that all those list should be loaded all the time in memory, but nothing is for free. Will be something like this:
use Doctrine\ORM\EntityManager;
class CollectionsService
{
private $em;
private $collectionOne;
private $collectionTwo;
public function __construct(EntityManager $entityManager)
{
$this->em = $entityManager;
$this->collectionOne= $this->em->getRepository('AppBundle:CollectionOne')->findAll();
$this->collectionTwo= $this->em->getRepository('AppBundle:CollectionTwo')->findAll();
}
public function getCollectionOne(){
return $this->collectionOne;
}
public function getCollectionTwo(){
return $this->collectionTwo;
}
}
Also must work something in the functions like next one , and don't be necessary do the load in the constructor.
public function getCollectionOne(){
if($this->collectionOne == null){
$this->collectionOne= $this->em->getRepository('AppBundle:CollectionOne')->findAll();
}
return $this->collectionOne;
}
Then expose the class as a service in services.yml
parameters:
collection.controller: AppBundle\Services\CollectionsService
services:
collections.service:
class: "%collection.controller%"
arguments:
entityManager: "#doctrine.orm.entity_manager"
And finally just use the service in the controller or the form to update the data $options['data'].
$collectionOne = $this->get('collections.service')->getCollectionOne();
I hope this help you.