Post for the tag: DTO

Rethinking Form Development

In one of my previous blog posts, Avoiding Entities in Forms, I've shown how to decouple your forms from your entities. Afterwards I got feedback and most of it was about the lack of examples and the flow, when to fill your data and how to get this back in the entity. However, often I notice that developers design forms based on their entities. This can lead to complex forms because you're confined to a strict set of properties. Developers often get struck with unmapped fields and form events to work their way around those limitations.

With Symfony Forms I highly recommend to follow the composition over inheritance principle. Small form types are easier to re-use and make it less complex to build forms. Moreover, this allows small data objects to have specific goals with validation for their specific case, rather than complex validation groups.


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Rethinking Form Development
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