symfony-collection | Manage your Symfony collection simply with vanilla JS | Web Framework library
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Manage your Symfony Form collection simply with vanilla JS.
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QUESTION
I can't believe this hasn't come up for other people, but I'm unable to find a solution.
Let's say I have two entity types, A and B with a one-to-many relationship. A has a collection of Bs.
The form for A has a CollectionType
for the Bs, with a custom entry_type
for B, allow_add
and allow_delete
set to true
. When the form is created/populated/rendered, the Bs' fields are identified by their index in the collection. When the form is posted back, the fields are mapped back onto the B entities according to the index again.
What if the database in the mean time decided to return the Bs in a different order? Then the values get swapped around on the Bs! I can't have that, as other entities will reference the Bs and now they've changed their meaning!
Even if the database doesn't change the order, the same issue appears when a B is deleted: The fields get shifted through the Bs and a different one deleted! (Ok, I'm not a 100% certain this happens, as there's a gap then in the numbering of the posted fields.) I've found this similar question where it does happen when another one is created (Symfony CollectionType regards deletion+creation as a modification of an item), but that sort of drifted from the issue and there's no usable answer.
How do I make sure the form is updating the entities the user actually edited?
I already tried to render the Bs' IDs as a HiddenType
, but then the form rightfully complains that the ID has no setter. It would probably force an ID on the wrong B anyways and Doctrine doesn't like that. I suppose I could add the Bs as unmapped and copy the values over to the correct objects manually, but that would defeat a good chunk of Symfony's form system.
I've used CollectionType
before, but not for entities that are referenced elsewhere. I would then delete all of the previous entities and create the collection anew from the posted data. But I can't do that now, can I?
ANSWER
Answered 2020-Nov-12 at 20:16Since doctrine 2.1, it's possible to change how associations are indexed. This will allow you to use the id
as the collection key (as the field has to be unique):
QUESTION
The last composer update completely broken my project based on Symfony5:
php.CRITICAL: Uncaught Error: Argument 1 passed to Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DoctrineParamConverter::__construct() must be an instance of Doctrine\Common\Persistence\ManagerRegistry or null, instance of Doctrine\Bundle\DoctrineBundle\Registry given
I've already updated all the references of Doctrine\Bundle\DoctrineBundle\Registry to Doctrine\Common\Persistence\ManagerRegistry a long time ago, according to the Symfony documentation
Any help would be appreciated
List of installed packages:
...ANSWER
Answered 2020-Aug-25 at 10:58- Update Php Version on your system to 7.4
- Run composer upgrade
QUESTION
I'm currently strugglin with rendering of my form type. I have an Order entity and OrderItems entity, which both have their own Type.
OrderType:
...ANSWER
Answered 2020-Aug-21 at 07:36A CollectionType give you only a prototype
Then, you must add javascript to use this prototype and create multiple forms of your collection
All is in the doc 😉 : https://symfony.com/doc/current/form/form_collections.html#allowing-new-tags-with-the-prototype
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