I have the following classes with a has_one relationship and I want to return it nested in JSON in my index method.
class QuantitySample < ActiveRecord::Base
has_one :quantity, :dependent => :destroy
...
class Quantity < ActiveRecord::Base
belongs_to :quantity_sample
...
I want to use respond_with on the index method to return each of the quantity samples and the quantity object associated with each one:
class QuantitySamplesController < ApplicationController
respond_to :json
def index
quantity_samples = current_user.quantity_samples
respond_with quantity_samples, :include => {:quantity => {}}
end
...
I don't get the nested / included quantity objects with the above code. However, if I replace respond_with with to_json:
respond_to do |format|
format.json do
render :json => quantity_samples.to_json(:include => {:quantity => {}})
end
end
The :include works!
Full JSON results: With respond_to I get:
{"quantity_samples"=>[{"id"=>1, "start_date"=>"2016-01-04T07:38:40.694Z", "end_date"=>"2016-01-04T07:38:40.694Z", "user_id"=>1, "workout_id"=>nil, "created_at"=>"2016-01-04T07:38:41.328Z", "updated_at"=>"2016-01-04T07:38:41.328Z", "quantity_type"=>"HKQuantityTypeIdentifierDistanceWalkingRunning", "device"=>nil, "metadata"=>nil}]}
vs. with to_json:
[{"id"=>1, "start_date"=>"2016-01-04T07:36:09.415Z", "end_date"=>"2016-01-04T07:36:09.415Z", "user_id"=>1, "workout_id"=>nil, "created_at"=>"2016-01-04T07:36:10.110Z", "updated_at"=>"2016-01-04T07:36:10.110Z", "quantity_type"=>"HKQuantityTypeIdentifierDistanceWalkingRunning", "device"=>nil, "metadata"=>nil, "quantity"=>{"id"=>2, "value"=>4200.0, "unit"=>"m", "created_at"=>"2016-01-04T07:36:10.123Z", "updated_at"=>"2016-01-04T07:36:10.123Z", "name"=>nil, "quantity_sample_id"=>1}}]
Why isn't this working with respond_with?
Seems to work for me. I just replicated what was done in the link supplied
respond_to :json
def index
quantity_samples = current_user.quantity_samples.to_json(include: :quantity)
respond_with quantity_samples
end