Active model serializers - custom adapter - ruby-on-rails

Question

I would like to refactor an existing rails API using active model serializers.
Unfortunately the existing API uses a slightly different JSON schema than any of the the existing adapters and I have been unable to recreate it using AMS.
The schema I am trying to recreate is like this:
{
"status": 0,
"message": "OK",
"timestamp": 1438940571,
"data": {
"contacts": [
{
"contact": {
"id": "1",
"first_name": "Kung Foo",
"last_name": "Panda",
"created_at": "2015-07-23T14:09:20.850Z",
"modified_at": "2015-08-04T15:21:36.639Z"
}
},
{
"contact": {
"id": "2",
"first_name": "Johnny",
"last_name": "Bravo",
"created_at": "2015-07-23T14:09:20.850Z",
"modified_at": "2015-08-04T15:21:36.639Z"
}
}
]
}
}
I am wondering is there a way to create a custom adapter for active model serializers, or otherwise create this schema.

Answer 1

Could just use a couple of serializers.
class MessageSerializer < ActiveModel::Serializer
attributes :status, :message, :timestamp, :data
# We could've just used that, were it not for nested hashes
# has_many :contacts, key: :data
attributes :data
def data
ActiveModel::ArraySerializer.new(object.contacts, root: 'contacts')
end
end
class ContactSerializer < ActiveModel::Serializer
attributes :id, :first_name, :last_name, :created_at, :modified_at
def root
'contact'
end
end
There seems to be no better way to do that
Then somewhere in your controller:
render json: Message.serializer.new(#message, root: false)