Add surveys; custom generated by admins

Available during registration or after conference

Co-authored-by: Shyukri <shshyukriev@suse.com>
Co-authored-by: Henne <hvogel@opensuse.org>
Co-authored-by: Moises <mdeniz@suse.com>

app/controllers/surveys_controller.rb

@@ -0,0 +1,30 @@
+class SurveysController < ApplicationController
+  load_resource :conference, find_by: :short_title
+  load_and_authorize_resource
+
+  def index
+    @surveys = @conference.surveys.select(&:active?)
+  end
+
+  def show
+    @survey_submission = @survey.survey_submissions.new
+  end
+
+  def reply
+    survey_submission = params[:survey_submission]
+
+    @survey.survey_questions.each do |survey_question|
+      reply = survey_question.survey_replies.find_by(user: current_user)
+      reply_text = survey_submission[survey_question.id.to_s].reject(&:blank?).join(',')
+
+      if reply
+        reply.update_attributes(text: reply_text) unless reply.text == reply_text
+      else
+        survey_question.survey_replies.create!(text: reply_text, user: current_user)
+      end
+      @survey.survey_submissions.create!(user: current_user) unless @survey.survey_submissions.find_by(user: current_user)
+    end
+
+    redirect_to :back
+  end
+end