JSONApi part1

spec/serializers/users/order_serializer.rb

@@ -0,0 +1,30 @@
+require 'spec_helper'
+
+describe Users::OrderSerializer do
+  let(:adapter){ ActiveModel::Serializer.config.adapter }
+  it "does not perform extra queries" do
+    l = create :list
+    o1 = create :order, list: l
+    create :product_order, order: o1
+    create :product_order, order: o1
+    o2 = create :order, list: l
+    create :product_order, order: o2
+    create :product_order, order: o2
+    list = List.find(l.id)
+    orders = list.orders.include_relation(:product_orders)
+    #expect{ object_as_json orders }.not_to exceed_query_limit 0
+    expect{ object_as_json orders }.not_to perform_any_queries
+    result = object_as_json(orders)
+    binding.pry
+    #result[:included].size.should eq 4
+  end
+
+  def object_as_json(obj)
+    serializer = if obj.is_a?(Array)
+      ActiveModel::Serializer::ArraySerializer.new(obj, serializer: described_class, add_included: true)
+    else
+      serializer = described_class.new(obj)
+    end
+    adapter.new(serializer, include: %w[product_orders]).as_json
+  end
+end