Define custom serializer for a class

[jtomaszewski]

How to set a serializer for given class, if I don't want to create another serializer with "xxxSerializer" name?

f.e.

class AbstractImage
  def serializer_class
    ImageSerializer
  end
end

class AvatarImage < AbstractImage; end
class CoverImage < AbstractImage; end

# I want all of those classes to be serialized with ImageSerializer, not AbstractImageSerializer, AvatarImageSerializer or DefaultSerializer

AFAIR there used to be #serializer_class method, but seems like it got removed from ActiveModel::Serializer ? Why?

If there's no particular reason, I'll send a PR fixing it back.

[stevenharman]

The #active_model_serializer factory method on every object has been replaced by a single factory method, ActiveModel::Serializer#serializer_for.

[jtomaszewski]

Yeah, it's okay, but it forces me to create new serializer for every single class, which is unneeded when I f.e. use inheritance with my classes.

See my little commit - changes nothing but allows me to be DRY.

[romansklenar]

+1
As @jtomaszewski says it'd be so useful for STI models where all descendants can be serialized with same serializer - you would specify it once in base class and then it wouldn't be needed to create serializer class for each descendant and specify serializer in all respond_with calls.

I'd use method #serializer_class too keep convention same as Pundit with its policy_class or Draper with its decorator_class.

[AxisOfEval]

+1 👍

Better to configure than to pollute the project with files one doesn't need. I'd go the serializer_class way too.

[loe]

+1 I need this too.

[JoeStanton]

👍

[jtomaszewski]

I changed this into #serializer_class and rebased to origin/master. Merge it, please? ; P

[steveklabnik]

This is a very tiny patch, so I don't mind adding it. Can I get at least one test though, please?

[steveklabnik]

I'd like to merge this, but I need a test, plus it needs to be rebased. Please rebase, add a test, and send to the 0-9-stable branch I'm making in a few hours, thanks!