How to get the fast_jsonapi to return the attributes of the relationships

Question

I have a rails api with a number of models that are being serialized by the fast_jsonapi gem.

This is what my models look like:

class Shift < ApplicationRecord
  belongs_to :team, optional: true
  ...

class Team < ApplicationRecord
  has_many :shifts
  ...

This is what the serializer looks like

class ShiftSerializer
  include FastJsonapi::ObjectSerializer
  ...
  belongs_to :team
  ...
end

The serialization works. However, even though I am including the compound team document:

def index
  shifts = policy_scope(Shift).includes(:team)
  options = {}
  options[:include] = [:team, :'team.name', :'team.color']
  render json: ShiftSerializer.new(shifts, options)
end

I'm still getting the object formatted like so:

...
relationships: {
  team: {
    data: {
      id: "22",
      type: "Team"
    }
  }
}

Whereas I'm expecting to get also the attributes of my team model.

Answer 1

fast_jsonapi implements json api specification so respond includes "included" key, where serialized data for relationships placed.That's default behavior