Improve quiz export

CHANGELOG.md

@@ -5,6 +5,9 @@
 - Improve performance of presentation to load slides faster
 - Fix manager layout on small screens
 - Add clickable hyperlinks in messages
+- Improve quiz export
+- Add option to force login to submit quizzes
+- Fix url with question mark being flagged as a question
 
 ### v.2.3.0
 

lib/claper/events.ex

@@ -123,7 +123,7 @@ defmodule Claper.Events do
     query =
       from(e in Event,
         where: e.user_id == ^user_id and not is_nil(e.expired_at),
-        order_by: [desc: e.inserted_at]
+        order_by: [desc: e.expired_at]
       )
 
     Repo.paginate(query, page: page, page_size: page_size, preload: preload)

lib/claper/quizzes.ex

@@ -443,6 +443,26 @@ defmodule Claper.Quizzes do
     end
   end
 
+  @doc """
+  Get number of submissions for a given quiz_id
+
+  ## Examples
+
+      iex> get_number_submissions(quiz_id)
+      12
+
+  """
+  def get_submission_count(quiz_id) do
+    from(r in QuizResponse,
+      where: r.quiz_id == ^quiz_id,
+      select:
+        count(
+          fragment("DISTINCT COALESCE(?, CAST(? AS varchar))", r.attendee_identifier, r.user_id)
+        )
+    )
+    |> Repo.one()
+  end
+
   @doc """
   Calculate percentage of all quiz questions for a given quiz.
 

lib/claper/quizzes/quiz.ex

@@ -6,7 +6,8 @@ defmodule Claper.Quizzes.Quiz do
     field :title, :string
     field :position, :integer, default: 0
     field :enabled, :boolean, default: false
-    field :show_results, :boolean, default: false
+    field :show_results, :boolean, default: true
+    field :allow_anonymous, :boolean, default: false
     field :lti_line_item_url, :string
 
     belongs_to :presentation_file, Claper.Presentations.PresentationFile
@@ -30,6 +31,7 @@ defmodule Claper.Quizzes.Quiz do
       :presentation_file_id,
       :enabled,
       :show_results,
+      :allow_anonymous,
       :lti_resource_id,
       :lti_line_item_url
     ])

lib/claper_web/controllers/stat_controller.ex

@@ -86,43 +86,87 @@ defmodule ClaperWeb.StatController do
     with quiz <-
            Quizzes.get_quiz!(quiz_id, [
              :quiz_questions,
+             :quiz_responses,
              quiz_questions: :quiz_question_opts,
+             quiz_responses: [:quiz_question_opt, :user],
              presentation_file: :event
            ]),
          event <- quiz.presentation_file.event,
          :ok <- authorize_event_access(current_user, event) do
-      # Create headers for the CSV
-      headers = ["Question", "Correct Answers", "Total Responses", "Response Distribution (%)"]
-
-      # Format data rows
-      data =
-        quiz.quiz_questions
-        |> Enum.map(fn question ->
-          [
-            question.content,
-            # Correct answers
-            question.quiz_question_opts
-            |> Enum.filter(& &1.is_correct)
-            |> Enum.map_join(", ", & &1.content),
-            # Total responses
-            question.quiz_question_opts
-            |> Enum.map(& &1.response_count)
-            |> Enum.sum()
-            |> to_string(),
-            # Response distribution
-            question.quiz_question_opts
-            |> Enum.map_join(", ", fn opt ->
-              "#{opt.content}: #{opt.percentage}%"
-            end)
-          ]
-        end)
+      questions = quiz.quiz_questions
+      headers = build_quiz_headers(questions)
 
-      export_as_csv(conn, headers, data, "quiz-#{sanitize(quiz.title)}")
-    else
-      :unauthorized -> send_resp(conn, 403, "Forbidden")
+      # Group responses by user/attendee and question
+      responses_by_user =
+        Enum.group_by(
+          quiz.quiz_responses,
+          fn response -> response.user_id || response.attendee_identifier end
+        )
+
+      # Format data rows - one row per user with their answers and score
+      data = Enum.map(responses_by_user, &process_user_responses(&1, questions))
+
+      csv_content =
+        CSV.encode([headers | data])
+        |> Enum.to_list()
+        |> to_string()
+
+      send_download(conn, {:binary, csv_content},
+        filename: "quiz_#{quiz.id}_results.csv",
+        content_type: "text/csv"
+      )
     end
   end
 
+  defp build_quiz_headers(questions) do
+    question_headers =
+      questions
+      |> Enum.with_index(1)
+      |> Enum.map(fn {question, _index} -> question.content end)
+
+    ["Attendee identifier", "User email"] ++ question_headers ++ ["Total"]
+  end
+
+  defp process_user_responses({_user_id, responses}, questions) do
+    user_identifier = format_attendee_identifier(List.first(responses).attendee_identifier)
+    user_email = Map.get(List.first(responses).user || %{}, :email, "N/A")
+    responses_by_question = Enum.group_by(responses, & &1.quiz_question_id)
+
+    answers_with_correctness = process_question_responses(questions, responses_by_question)
+    answers = Enum.map(answers_with_correctness, fn {answer, _} -> answer || "" end)
+    correct_count = Enum.count(answers_with_correctness, fn {_, correct} -> correct end)
+    total = "#{correct_count}/#{length(questions)}"
+
+    [user_identifier, user_email] ++ answers ++ [total]
+  end
+
+  defp process_question_responses(questions, responses_by_question) do
+    Enum.map(questions, fn question ->
+      question_responses = Map.get(responses_by_question, question.id, [])
+
+      correct_opt_ids =
+        question.quiz_question_opts
+        |> Enum.filter(& &1.is_correct)
+        |> Enum.map(& &1.id)
+        |> MapSet.new()
+
+      format_question_response(question_responses, correct_opt_ids)
+    end)
+  end
+
+  defp format_question_response([], _correct_opt_ids), do: {nil, false}
+
+  defp format_question_response(question_responses, correct_opt_ids) do
+    answers = Enum.map(question_responses, & &1.quiz_question_opt.content)
+
+    all_correct =
+      Enum.all?(question_responses, fn r ->
+        MapSet.member?(correct_opt_ids, r.quiz_question_opt_id)
+      end)
+
+    {Enum.join(answers, ", "), all_correct}
+  end
+
   @doc """
   Exports quiz as QTI format.
   Requires user to be either an event leader or the event owner.

lib/claper_web/helpers.ex

@@ -14,4 +14,9 @@ defmodule ClaperWeb.Helpers do
         text
     end)
   end
+
+  def body_without_links(text) do
+    url_regex = ~r/(https?:\/\/[^\s]+)/
+    String.replace(text, url_regex, "")
+  end
 end

lib/claper_web/live/event_live/manage.ex

@@ -92,7 +92,7 @@ defmodule ClaperWeb.EventLive.Manage do
       |> stream_insert(:posts, post)
       |> update(:post_count, fn post_count -> post_count + 1 end)
 
-    case post.body =~ "?" do
+    case ClaperWeb.Helpers.body_without_links(post.body) =~ "?" do
       true ->
         {:noreply,
          socket
@@ -130,7 +130,7 @@ defmodule ClaperWeb.EventLive.Manage do
       end)
       |> update(:post_count, fn post_count -> post_count - 1 end)
 
-    case deleted_post.body =~ "?" do
+    case ClaperWeb.Helpers.body_without_links(deleted_post.body) =~ "?" do
       true ->
         {:noreply,
          socket
@@ -920,6 +920,7 @@ defmodule ClaperWeb.EventLive.Manage do
 
   defp list_all_questions(_socket, event_id, sort \\ "date") do
     Claper.Posts.list_questions(event_id, [:event, :reactions], String.to_atom(sort))
+    |> Enum.filter(&(ClaperWeb.Helpers.body_without_links(&1.body) =~ "?"))
   end
 
   defp list_form_submits(_socket, presentation_file_id) do

lib/claper_web/live/event_live/manageable_post_component.ex

@@ -7,10 +7,10 @@ defmodule ClaperWeb.EventLive.ManageablePostComponent do
     ~H"""
     <div
       id={"#{@id}"}
-      class={"#{if @post.body =~ "?", do: "border-supporting-yellow-400 border-2"} flex flex-col md:block px-4 pb-2 pt-3 rounded-b-lg rounded-tr-lg bg-white relative shadow-md text-black break-all mt-2"}
+      class={"#{if ClaperWeb.Helpers.body_without_links(@post.body) =~ "?", do: "border-supporting-yellow-400 border-2"} flex flex-col md:block px-4 pb-2 pt-3 rounded-b-lg rounded-tr-lg bg-white relative shadow-md text-black break-all mt-2"}
     >
       <div
-        :if={@post.body =~ "?"}
+        :if={ClaperWeb.Helpers.body_without_links(@post.body) =~ "?"}
         class="inline-flex items-center space-x-1 justify-center px-3 py-0.5 rounded-full text-xs font-medium bg-supporting-yellow-400 text-white mb-2"
       >
         <svg

lib/claper_web/live/event_live/quiz_component.ex

@@ -150,27 +150,40 @@ defmodule ClaperWeb.EventLive.QuizComponent do
               <button phx-click="prev-question" class="px-3 py-2 text-white font-medium">
                 <%= gettext("Back") %>
               </button>
-            <% else %>
-              <div class="w-1/2"></div>
             <% end %>
 
-            <button
-              :if={@current_quiz_question_idx < length(@quiz.quiz_questions) - 1}
-              phx-click="next-question"
-              disabled={not @has_selection}
-              class={"px-3 py-2 text-white font-medium rounded-md h-full #{if @has_selection, do: "bg-primary-400 hover:bg-primary-500", else: "bg-gray-500 cursor-not-allowed"}"}
-            >
-              <%= gettext("Next") %>
-            </button>
-
-            <button
-              :if={@current_quiz_question_idx == length(@quiz.quiz_questions) - 1}
-              phx-click="submit-quiz"
-              disabled={not @has_selection}
-              class={"px-3 py-2 text-white font-medium rounded-md h-full #{if @has_selection, do: "bg-primary-400 hover:bg-primary-500", else: "bg-gray-500 cursor-not-allowed"}"}
-            >
-              <%= gettext("Submit") %>
-            </button>
+            <%= if @current_quiz_question_idx < length(@quiz.quiz_questions) - 1 do %>
+              <button
+                phx-click="next-question"
+                class={"px-3 py-2 text-white font-medium rounded-md h-full #{if @has_selection, do: "bg-primary-400 hover:bg-primary-500", else: "bg-gray-500 cursor-not-allowed"}"}
+                disabled={not @has_selection}
+              >
+                <%= gettext("Next") %>
+              </button>
+            <% else %>
+              <%= if is_nil(@current_user) && !@quiz.allow_anonymous do %>
+                <div class="w-full flex items-center justify-between">
+                  <div class="text-white text-sm font-semibold">
+                    <%= gettext("Please sign in to submit your answers") %>
+                  </div>
+                  <%= link(
+                    gettext("Sign in"),
+                    target: "_blank",
+                    to: ~p"/users/log_in",
+                    class:
+                      "inline px-3 py-2 text-white font-medium rounded-md h-full bg-primary-400 hover:bg-primary-500"
+                  ) %>
+                </div>
+              <% else %>
+                <button
+                  phx-click="submit-quiz"
+                  class={"px-3 py-2 text-white font-medium rounded-md h-full #{if @has_selection, do: "bg-primary-400 hover:bg-primary-500", else: "bg-gray-500 cursor-not-allowed"}"}
+                  disabled={not @has_selection}
+                >
+                  <%= gettext("Submit") %>
+                </button>
+              <% end %>
+            <% end %>
           </div>
 
           <div

lib/claper_web/live/quiz_live/quiz_component.html.heex

@@ -50,7 +50,7 @@
 
       <%= inputs_for f, :quiz_questions, fn q -> %>
         <div class={[
-          "mb-8 p-4 border rounded-b-md",
+          "mb-4 p-4 border rounded-b-md",
           if(@current_quiz_question_index != q.index, do: "hidden", else: "")
         ]}>
           <div class="flex gap-x-3 mt-3 items-center justify-start">
@@ -169,6 +169,18 @@
       <% end %>
     </div>
 
+    <p class="text-gray-700 text-xl font-semibold"><%= gettext("Options") %></p>
+
+    <div class="flex gap-x-2 mb-5 mt-3">
+      <%= checkbox(f, :allow_anonymous, class: "h-4 w-4") %>
+      <%= label(
+        f,
+        :allow_anonymous,
+        gettext("Allow anonymous submissions"),
+        class: "text-sm font-medium"
+      ) %>
+    </div>
+
     <div class="flex justify-between items-center">
       <div class="flex space-x-3">
         <button

lib/claper_web/live/stat_live/index.html.heex

@@ -430,6 +430,13 @@
                           ) %>
                         </span>
                       </p>
+
+                      <p class="text-gray-400 text-sm">
+                        <%= gettext("Total submissions") %>:
+                        <span class="font-semibold">
+                          <%= Claper.Quizzes.get_submission_count(quiz.id) %>
+                        </span>
+                      </p>
                     </div>
 
                     <div class="flex flex-col space-y-3 overflow-y-auto max-h-[500px]">

priv/repo/migrations/20250102174720_add_allow_anonymous_to_quizzes.exs

@@ -0,0 +1,9 @@
+defmodule Claper.Repo.Migrations.AddAllowAnonymousToQuizzes do
+  use Ecto.Migration
+
+  def change do
+    alter table(:quizzes) do
+      add :allow_anonymous, :boolean, default: true
+    end
+  end
+end