candidate quiz progression work

app/workers/candidate_quiz.rb

@@ -24,7 +24,7 @@ class CandidateQuiz
                inner join questions q on q.quiz_id = c.quiz_id
                left join answers a on a.candidate_id = c.id AND a.question_id = q.id
              where q.active = true and c.id = #{candidate_id} #{question}
-             order by c.id, q.sort;"
+             order by q.sort;"
       ActiveRecord::Base.connection.exec_query(sql)
     end
 end

app/workers/quiz_status.rb

@@ -27,4 +27,16 @@ class QuizStatus
 
     (answs / total * 100).round.to_i
   end
+
+  def current_question_id
+    sql = "select q.id question_id
+           from candidates c
+             inner join questions q on q.quiz_id = c.quiz_id
+             left join answers a on a.candidate_id = c.id AND a.question_id = q.id
+           where q.active = true and c.id = #{candidate.to_i}
+             and (a.id is null OR a.submitted is false)
+           order by q.sort limit 1;"
+    result = ActiveRecord::Base.connection.exec_query(sql).to_hash.first
+    result['question_id'] unless result.nil?
+  end
 end