Implement a conflicts summary model

app/controllers/conflicts_summaries_controller.rb

@@ -0,0 +1,11 @@
+class ConflictsSummariesController < ApplicationController
+  def show
+    @conflicts_summary = ConflictsSummary.new conflicts_summary_params
+  end
+
+  private
+
+  def conflicts_summary_params
+    params.require(:conflicts_summary).permit(talk_ids: [])
+  end
+end

app/models/conflicts_summary.rb

@@ -0,0 +1,18 @@
+class ConflictsSummary
+  include ActiveModel::Model
+
+  attr_accessor :talk_ids
+
+  def talk_ids
+    @talk_ids ||= []
+  end
+
+  def conflicts
+    talk_ids.map do |talk_id|
+      {
+       talk_id: talk_id,
+       conflicts: ConflictsTable.new(talk_id: talk_id, other_talks_ids: talk_ids.reject { |id| id == talk_id }).conflicts
+      }
+    end
+  end
+end

app/views/conflicts_summaries/show.json.jbuilder

@@ -0,0 +1 @@
+json.merge! @conflicts_summary.conflicts

config/routes.rb

@@ -3,5 +3,6 @@ Rails.application.routes.draw do
   root to: 'home#index'
   resource :summary, only: :show
   resource :conflicts, only: :show
+  resource :conflicts_summary, only: :show
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end