Show link to the first question

app/models/legislation/question.rb

@@ -14,8 +14,14 @@ class Legislation::Question < ActiveRecord::Base
   validates :process, presence: true
   validates :title, presence: true
 
+  scope :sorted, -> { order('id ASC') }
+
   def next_question_id
-    @next_question_id ||= process.questions.where("id > ?", id).order('id ASC').limit(1).pluck(:id).first
+    @next_question_id ||= process.questions.where("id > ?", id).sorted.limit(1).pluck(:id).first
+  end
+
+  def first_question_id
+    @first_question_id ||= process.questions.sorted.limit(1).pluck(:id).first
   end
 
   def answer_for_user(user)

app/views/legislation/questions/show.html.erb

@@ -16,6 +16,13 @@
             <span class="icon-angle-right" aria-hidden="true">
           <% end %>
         <% end %>
+      <% elsif @question.first_question_id %>
+        <%= link_to legislation_process_question_path(@process, @question.first_question_id), class: "quiz-next-link" do %>
+          <%= content_tag :div, class: "quiz-next" do %>
+            <%= t('.first_question') %>
+            <span class="icon-angle-right" aria-hidden="true">
+          <% end %>
+        <% end %>
       <% end %>
     </div>
   </div>

config/locales/en.yml

@@ -281,6 +281,7 @@ en:
         answer_question: Submit answer
         comments: Comments
         next_question: Next question
+        first_question: First question
         share: Share
         share_twitter: Share on Twitter
         share_facebook: Share on Facebook

config/locales/es.yml

@@ -281,6 +281,7 @@ es:
         answer_question: Enviar respuesta
         comments: Comentarios
         next_question: Siguiente pregunta
+        first_question: Primera pregunta
         share: Compartir
         share_twitter: Compartir en Twitter
         share_facebook: Compartir en Facebook

spec/models/legislation/question_spec.rb

@@ -1,10 +1,10 @@
 require 'rails_helper'
 
 RSpec.describe Legislation::Question, type: :model do
-  let(:legislation_question) { build(:legislation_question) }
+  let(:question) { create(:legislation_question) }
 
   it "should be valid" do
-    expect(legislation_question).to be_valid
+    expect(question).to be_valid
   end
 
   context "can be deleted" do
@@ -17,7 +17,6 @@ RSpec.describe Legislation::Question, type: :model do
     end
 
     example "when it has options but no answers" do
-      question = create(:legislation_question)
       create(:legislation_question_option, question: question, value: "Yes")
       create(:legislation_question_option, question: question, value: "No")
 
@@ -27,7 +26,6 @@ RSpec.describe Legislation::Question, type: :model do
     end
 
     example "when it has options and answers" do
-      question = create(:legislation_question)
       option_1 = create(:legislation_question_option, question: question, value: "Yes")
       option_2 = create(:legislation_question_option, question: question, value: "No")
       create(:legislation_answer, question: question, question_option: option_1)
@@ -38,4 +36,27 @@ RSpec.describe Legislation::Question, type: :model do
       end.to change { Legislation::Question.count }.by(-1)
     end
   end
+
+  describe "#next_question_id" do
+    let!(:question1) { create(:legislation_question) }
+    let!(:question2) { create(:legislation_question, legislation_process_id: question1.legislation_process_id) }
+
+    it "should return the next question" do
+      expect(question1.next_question_id).to eq(question2.id)
+    end
+
+    it "should return nil" do
+      expect(question2.next_question_id).to be_nil
+    end
+  end
+
+  describe "#first_question_id" do
+    let!(:question1) { create(:legislation_question) }
+    let!(:question2) { create(:legislation_question, legislation_process_id: question1.legislation_process_id) }
+
+    it "should return the first question" do
+      expect(question1.first_question_id).to eq(question1.id)
+      expect(question2.first_question_id).to eq(question1.id)
+    end
+  end
 end