wrapping in object but not in collection

[Marcel Augsburger]

I'm working with an API that is not resource oriented, and wraps everything around a "result"

So when I go to the resource url for a person I get:

{

  result:{

• • name: "Marcel Augsburger",
  • id: "52581d2d097182ee7b000001"

  }

}

And for a collection I get:

{

• result: 

  [

  • {

    • name: "Marcel Augsburger",
    • id: "52581d2d097182ee7b000001"

    },
  • {

    • name: "Another Person",
    • id: "52581d47097182ee7b000002"

    }

  ]

}

So for my a person representer I would fix the problem adding a wrapper:

self.representation_wrap= :result

So in the collection I would use:

collection :result, :extend => PersonRepresenter, :class => Person

but the wrapper around person makes it not work, since the persons aren't wrapped in the collection.

Any ideas?

[Nick Sutterer]

Hey Marcel, use a lonely collection with a wrap for your collection: https://github.com/apotonick/representable/#lonely-collections

We are working on a new feature to make lonely collections implicit, meaning, they can be created automatically from the single representer: https://github.com/apotonick/representable/pull/22

Please, don't hesitate to ask if there's more questions.

Nick

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[Marcel Augsburger]

Yes, more questions! I tried it out and it gives me the same error (undefined method `has_key?' for nil:NilClass in method 'read' in hash_bindings.rb). I guess if I use a lonely collection and a wrap for my collection, I still have the problem that a single object (Person) has a wrapper, but no wrapper when fetching a collection of them. The real problem, I think, is dealing with the "result" wrapper when fetching a single object, or somehow ignoring that wrapper in the collection.

Just to make everything clear here's the real code and real sources:

Example person:

http://lab-fci.popit.mysociety.org/api/v0.1/persons/52581d2d097182ee7b000001

Example person collection:

http:// lab-fci.popit.mysociety.org/api/v0.1/persons

Person Representer:

https://github.com/ciudadanointeligente/popit_representers/blob/master/lib/popit_representers/representers/person_representer.rb

Person Collection Representer:

https://github.com/ciudadanointeligente/popit_representers/blob/master/lib/popit_representers/representers/person_collection_representer.rb

Example classes:

class PopitPerson

include Popit::PersonRepresenter

end

class PopitPersonCollection

include Popit::PersonCollectionRepresenter

end

So, as it is, it works when I "get" a single person, but doesn't when I get a collection.

If I comment the wrapper in the person representer:

# self.representation_wrap= :result

then it works when I get a collection, but not when I get a single person.

I guess I could modify the person json to get rid of the "result" wrapper, and then trick the get method into using the new json, but there has to be a nicer way right?

2013/12/10 Nick Sutterer <apot...@gmail.com>