Awkward to use association objects and association ids at the same time.

[ahawkins]

I'm using this project in my application. I have classes that should return serialized objects and some that only only return the id's. At this point you can get around it by saying attributes :account_id then specifying has_one or has_many. I'm proposing a change to the API that would make it easier for this situation to work. Here is my proposed change:

class UserSerializer < ActiveModel::Serializer
  has_many :contacts, :embed => :objects
  belongs_to :account, :embed => :id
end

The embed method could set the preference, but I'm not sure how that would work. I am interested in adding this functionality and will gladly write a pull request if you guys thing this is a good thing to do.

[ahawkins]

I'm still willing and able to write the code for this. If you don't think this is a worthy addition then close this issue & I'll just continue on using attribute :association_ids.

[wycats]

I'd love to see a pull request. If it's not too complex, the feature seems worthy.