Check if debate phase is open to create answers

app/controllers/legislation/answers_controller.rb

@@ -9,12 +9,19 @@ class Legislation::AnswersController < Legislation::BaseController
   respond_to :html, :js
 
   def create
-    @answer.user = current_user
-    @answer.save
-
-    respond_to do |format|
-      format.js {}
-      format.html { redirect_to legislation_process_question_path(@process, @question) }
+    if @process.open_phase?(:debate)
+      @answer.user = current_user
+      @answer.save
+      track_event
+      respond_to do |format|
+        format.js
+        format.html { redirect_to legislation_process_question_path(@process, @question) }
+      end
+    else
+      respond_to do |format|
+        format.js
+        format.html { redirect_to legislation_process_question_path(@process, @question), alert: t('legislation.questions.participation.phase_not_open') }
+      end
     end
   end
 
@@ -24,4 +31,11 @@ class Legislation::AnswersController < Legislation::BaseController
         :legislation_question_option_id,
       )
     end
+
+    def track_event
+      ahoy.track "legislation_answer_created".to_sym,
+                 "legislation_answer_id": @answer.id,
+                 "legislation_question_option_id": @answer.legislation_question_option_id,
+                 "legislation_question_id": @answer.legislation_question_id
+    end
 end