Symfony form category - subcategory

问题

I try to make a form with category and subcategory like the picture below :

So, I made my form like that :

        ->add('souscategorie', EntityType::class, array(
                                    'label' => false,
                                    'class' => 'App:souscategorie',
                                    'query_builder' => function(EntityRepository $er) {
                                        return $er->createQueryBuilder('souscategorie')
                                            ->leftJoin('souscategorie.categorie', 'categorie')
                                            ->addSelect('souscategorie')
                                            ->addSelect('categorie')
                                        ;
                                    },
                                    'expanded'=> true,
                                    'multiple'=> true,
                                    'choice_label' => function($sousCategorie){
                                        return $sousCategorie->getCategorie()->getNom()." - ".$sousCategorie->getNom();
                                    },
                                    'group_by' => function($sousCategorie, $key, $value){
                                        return $sousCategorie->getCategorie()->getNom();
                                    }))

The result show all categories and subcategories concatenate.

How to split categories and subcategories ?

Thanks for your help ;)

回答1:

To make tree structure for your categories you can use StofDoctrineExtensionsBundle

Documentation for the bundle is here

You would need to use Tree extension (nestedset variation).

Here is the example that shows how to add categories to the project

来源：https://stackoverflow.com/questions/52802530/symfony-form-category-subcategory