Add given_order to related poll question answers forms

Since given order is no longer being generated automatically we need
to add it to related forms and to strong parameters methods

app/controllers/admin/poll/questions/answers_controller.rb

@@ -50,7 +50,8 @@ class Admin::Poll::Questions::AnswersController < Admin::Poll::BaseController
 
     def answer_params
       documents_attributes = [:id, :title, :attachment, :cached_attachment, :user_id, :_destroy]
-      attributes = [:title, :description, :question_id, documents_attributes: documents_attributes]
+      attributes = [:title, :description, :given_order, :question_id,
+        documents_attributes: documents_attributes]
       params.require(:poll_question_answer).permit(*attributes, *translation_params(Poll::Question::Answer))
     end
 

app/controllers/dashboard/polls_controller.rb

@@ -62,7 +62,8 @@ class Dashboard::PollsController < Dashboard::BaseController
   end
 
   def question_answers_attributes
-    [:id, :_destroy, :title, :description, :question_id, documents_attributes: documents_attributes]
+    [:id, :_destroy, :title, :description, :given_order, :question_id,
+     documents_attributes: documents_attributes]
   end
 
   def documents_attributes

app/views/admin/poll/questions/answers/_form.html.erb

@@ -4,6 +4,9 @@
 
   <%= render 'shared/errors', resource: @answer %>
 
+  <%= f.hidden_field :given_order,
+        value: @answer.persisted? ? @answer.given_order : @answer.class.last_position(@answer.question_id || @question.id) + 1 %>
+
   <%= f.hidden_field :question_id, value: @answer.question_id || @question.id %>
 
   <%= f.translatable_text_field :title %>

app/views/dashboard/polls/_question_answer_fields.html.erb

@@ -1,5 +1,6 @@
 <div class="small-12 medium-6 column">
   <div class="answer-fields">
+    <%= f.hidden_field :given_order %>
     <div class="row expanded">
       <div class="small-12 medium-9 column">
         <%= f.text_field :title %>

spec/features/admin/poll/questions/answers/answers_spec.rb

@@ -65,7 +65,7 @@ feature 'Answers' do
     expect(page).to have_content(new_title)
     expect(page).not_to have_content(old_title)
 
-    expect(page.body.index(new_title)).to be < page.body.index(answer2.title)
+    expect(answer2.title).to appear_before(new_title)
   end
 
 end