add editorial column to problem table

judge/views/problem.py

@@ -10,7 +10,7 @@ from django.contrib.auth.decorators import login_required
 from django.contrib.auth.mixins import PermissionRequiredMixin
 from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
 from django.db import transaction
-from django.db.models import Count, F, Prefetch, Q
+from django.db.models import Count, F, Prefetch, Q, Sum, Case, When, IntegerField
 from django.db.utils import ProgrammingError
 from django.http import Http404, HttpResponse, HttpResponseBadRequest, HttpResponseForbidden, HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
@@ -404,9 +404,17 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
 
     def get_context_data(self, **kwargs):
         context = super(ProblemList, self).get_context_data(**kwargs)
+
         context['hide_solved'] = 0 if self.in_contest else int(self.hide_solved)
         context['show_types'] = 0 if self.in_contest else int(self.show_types)
         context['full_text'] = 0 if self.in_contest else int(self.full_text)
+        context['show_editorial'] = 0 if self.in_contest else int(self.show_editorial)
+
+        if (context['show_editorial']):
+            context['object_list'] = context['object_list'] \
+                                        .annotate(has_public_editorial=Sum(Case(When(solution__is_public=True, then=1),
+                                                  default=0, output_field=IntegerField())))
+
         context['category'] = self.category
         context['categories'] = ProblemGroup.objects.all()
         if self.show_types:
@@ -456,6 +464,7 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
         self.hide_solved = self.GET_with_session(request, 'hide_solved')
         self.show_types = self.GET_with_session(request, 'show_types')
         self.full_text = self.GET_with_session(request, 'full_text')
+        self.show_editorial = self.GET_with_session(request, 'show_editorial')
         
         self.search_query = None
         self.category = None
@@ -485,7 +494,7 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
             return generic_message(request, 'FTS syntax error', e.args[1], status=400)
 
     def post(self, request, *args, **kwargs):
-        to_update = ('hide_solved', 'show_types', 'full_text')
+        to_update = ('hide_solved', 'show_types', 'full_text', 'show_editorial')
         for key in to_update:
             if key in request.GET:
                 val = request.GET.get(key) == '1'

templates/problem/list.html

@@ -77,7 +77,7 @@
 
                 $('#go').click(clean_submit);
 
-                $('input#full_text, input#hide_solved, input#show_types').click(function () {
+                $('input#full_text, input#hide_solved, input#show_types, input#show_editorial').click(function () {
                     prep_form();
                     ($('<form>').attr('action', window.location.pathname + '?' + $form.serialize())
                         .append($('<input>').attr('type', 'hidden').attr('name', 'csrfmiddlewaretoken')
@@ -245,11 +245,16 @@
                         <th class="users">
                             <a href="{{ sort_links.user_count }}">{{ _('Users') }}{{ sort_order.user_count }}</a>
                         </th>
+                        {% if show_editorial %}
+                        <th class="editorial">
+                            Editorial
+                        </th>
+                        {% endif %}
                     {% endif %}
                 </tr>
                 </thead>
                 <tbody>
-                {% for problem in problems %}
+                {% for problem in object_list %}
                     <tr>
                         {% if request.user.is_authenticated %}
                             {% if problem.id in completed_problem_ids %}
@@ -311,6 +316,13 @@
                                 {% endif %}
                             </a>
                         </td>
+                        {% if show_editorial%}
+                        <td class="editorial">
+                            {% if problem.has_public_editorial %}
+                                <a href="{{ url('problem_editorial', problem.code) }}">{{ _('Editorial') }}</a>
+                            {% endif %}
+                        </td>
+                        {% endif %}
                     </tr>
                 {% endfor %}
                 </tbody>

templates/problem/search-form.html

@@ -26,6 +26,11 @@
                         {% if show_types %} checked{% endif %}>
                 <label for="show_types">{{ _('Show problem types') }}</label>
             </div>
+            <div>
+                <input id="show_editorial" type="checkbox" name="show_editorial" value="1"
+                        {% if show_editorial %} checked{% endif %}>
+                <label for="show_editorial">{{ _('Show editorial') }}</label>
+            </div>
             <div class="filter-form-group">
                 <label for="category"><i>{{ _('Category') }}</i></label>
                 <select id="category" name="category">