active-model-serializers

I am using rails 4.0.0 and am looking for a way to serialize a custom object which contains predefined objects with these predefined object's serializers. Example: I have a model Student with a serializer StudentSerializer. I want to render a JSON object as follows: { user_type: "student" student: { id: 1 email: fake@email.com } } My serializer written for Student only serializes the email and id attributes. However when I call: render json: {user_type="student", student: stu} I get the full object of student back with all attributes. Is it possible to pick a serializer with active_model

I have a model with several layers of nested associations. e.g., ModelA has_many: model_b ModelB has_one : model_c ModelC has_many: model_d ModelD has_many: model_e ... In serializers, embed :ids, include: true is used for sideloading: class ModelASerializer < ActiveModel::Serializer embed :ids, include: true has_many: model_b attributes: ... end class ModelBSerializer < ActiveModel::Serializer embed :ids, include: true ... When model_a is rendered, it has a serious "n+1 problem" and will generate thousands of calls like: ModelC Load (0.3ms) SELECT "model_cs".* FROM "model_cs" WHERE "model_cs"

In a Ruby 2/Rails 4 app, I am trying to use acts-as-taggable-on in conjunction with active_model_serializers in order to create a JSON API that would output my tags along with other model parameters. First some background/motivation for this issue: The JSON is being fed into ember/ember-data, which as of the time of this writing has removed support for embedded records in JSON. There is a supposed fix in the documentation about this, but I find it clumsy and also haven't actually gotten it to work. Since I'm an Ember newbie and am a little more comfortable with Rails, I figure I'll try to

I'm using ActiveModel::Serializer to customize the JSON responses for my API. This works fine in most cases, except when it fails to save a model successfully. For example, def create def create book = Book.new(book_params) book.save respond_with book, location: nil end end As I understand it, the respond_with action will basically execute code that looks something like this (in order to generate the response). if resource.errors.any? render json: {:status => 'failed', :errors => resource.errors} else render json: {:status => 'created', :object => resource} end This does match up with what I'm