CODEWITHSUNDEEP
doctrine-ormhierarchical-datapolymorphic-associations
Albert221
Albert221

Reputation: 7182

Polymorphic relation to itself too in Doctrine

I'm using Symfony 3.0.1 (doctrine/orm ^2.5) and I want to have a polymorphic relation on Forum entity to Category or Forum entities (as in the image). You can imagine it like a simple forum website example. You have got general category -> forum -> subforum -> subsubforum etc. What's the best way to do that?

Polymorphic relation to itself

Upvotes: 0

Views: 82

Answers (1)

mickadoo
mickadoo

Reputation: 3483

You could have a look at nested sets in the doctrine extension. I've used them and found them very easy - they take care of a lot of the complications involved in handling nested set relationships. In your case Forum would be be just annotated with @Gedmo\Tree(type="nested"). Each forum would have a ManyToOne relation to Category as well as a relation to its own parent forum.

https://github.com/Atlantic18/DoctrineExtensions/blob/master/doc/tree.md

Upvotes: 1

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