Paginate contest summary

dmoj/urls.py

@@ -518,9 +518,8 @@ urlpatterns = [
     ),
     url(r"^contests/", paged_list_view(contests.ContestList, "contest_list")),
     url(
-        r"^contests/summary/(?P<key>\w+)$",
-        contests.contests_summary_view,
-        name="contests_summary",
+        r"^contests/summary/(?P<key>\w+)/",
+        paged_list_view(contests.ContestsSummaryView, "contests_summary"),
     ),
     url(r"^course/", paged_list_view(course.CourseList, "course_list")),
     url(

judge/views/contests.py

@@ -1426,16 +1426,23 @@ ContestsSummaryData = namedtuple(
 )
 
 
-def contests_summary_view(request, key):
+class ContestsSummaryView(DiggPaginatorMixin, ListView):
+    paginate_by = 50
+    template_name = "contest/contests_summary.html"
+
+    def get(self, *args, **kwargs):
         try:
-        contests_summary = ContestsSummary.objects.get(key=key)
+            self.contests_summary = ContestsSummary.objects.get(key=kwargs["key"])
         except:
             raise Http404()
+        return super().get(*args, **kwargs)
 
-    cache_key = "csv:" + key
-    context = cache.get(cache_key)
-    if context:
-        return render(request, "contest/contests_summary.html", context)
+    def _get_contests_and_ranking(self):
+        contests_summary = self.contests_summary
+        cache_key = "csv:" + contests_summary.key
+        result = cache.get(cache_key)
+        if result:
+            return result
 
         scores_system = contests_summary.scores
         contests = contests_summary.contests.all()
@@ -1445,7 +1452,7 @@ def contests_summary_view(request, key):
 
         for i in range(len(contests)):
             contest = contests[i]
-        users, problems = get_contest_ranking_list(request, contest)
+            users, problems = get_contest_ranking_list(self.request, contest)
             for rank, user in users:
                 curr_score = 0
                 if rank - 1 < len(scores_system):
@@ -1467,14 +1474,25 @@ def contests_summary_view(request, key):
         sorted_total_points.sort(key=lambda x: x.points, reverse=True)
         total_rank = ranker(sorted_total_points)
 
-    context = {
+        result = {
             "total_rank": list(total_rank),
-        "title": _("Contests Summary"),
             "contests": contests,
         }
-    cache.set(cache_key, context)
+        cache.set(cache_key, result)
+        return result
 
-    return render(request, "contest/contests_summary.html", context)
+    def get_queryset(self):
+        rank_and_contests = self._get_contests_and_ranking()
+        total_rank = rank_and_contests["total_rank"]
+        self.contests = rank_and_contests["contests"]
+        return total_rank
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["contests"] = self.contests
+        context["title"] = _("Contests")
+        context["first_page_href"] = "."
+        return context
 
 
 @receiver([post_save, post_delete], sender=ContestsSummary)

templates/contest/contests_summary.html

@@ -42,7 +42,7 @@
       </tr>
     </thead>
     <tbody>
-      {% for rank, item in total_rank %}
+      {% for rank, item in page_obj %}
         <tr>
           <td>
             {{ rank }}
@@ -68,4 +68,9 @@
       {% endfor %}
     </tbody>
   </table>
+  {% if page_obj and page_obj.num_pages > 1 %}
+    <div style="margin-top: 10px;">
+      {% include "list-pages.html" %}
+    </div>
+  {% endif %}
 {% endblock %}