Choose representers for nested elements on runtime about roar HOT 7 CLOSED

Interesting case. An easy place to implement this is in Representable::Binding#extend_for: https://github.com/apotonick/representable/blob/master/lib/representable/binding.rb#L39

It could be overwritten like

def extend_for(object)
  if definition.representer_module.is_a?(PolymorphicExtender)
    object.extend PolymorphicExtender.compute_representer_for(object)
  end
 super

I'm not sure if this should be put into the Roar core, however. What do you think?

from roar.

Hmm I think, according to your blog post, the possibility to create RESTful collection resources with roar died. :(

http://nicksda.apotomo.de/2012/01/ruby-on-rest-3-one-model-multiple-representations/
I wanted to emphasize that the representer doesn’t guess anything from the represented object.[..]. No magic or implicit semantics in Roar. And this is a good thing.

no wait. let me think ^^

from roar.

Hey, don't cry. We already have collections, however, they assume all items have the same type. There's nothing to say against a polymorphic resolver! What I tried to say in my recent blog post is that we don't fuck around with the represented model per default. Fucking around if the represented model wants that, however, is absolutely ok.

from roar.

Ok I understand. Your blog post is devoted to Steve Klabnik's comment. Hmm he's a REST hardliner...

I tried to hack representable.rb#collection half day... Wrong place =)

So if no :class is given, a PolymorphicExtender will do the work.

But what could be a good convention for naming?
User => UserRepresenter
Users::Profile => Users::ProfileRepresenter

from roar.

If you define no :class or :extend https://github.com/apotonick/representable/blob/master/lib/representable/binding.rb#L39 is never called. Instead standard to_json is called directly.

from roar.

Yo, here's an example how to implement the PolymorphicExtender, you can simply use :extend and the #extended hook. trailblazer/representable@390335f Works only for rendering, we'd have to provide some type infos for deserialization in the document.

from roar.

Use representable <= 1.2.9 and do it like this, bro: https://github.com/apotonick/representable/#polymorphic-extend

from roar.