Add functionality to clear blacklisted music videos in GroupClearBlacklistView and update group detail template

game/templates/game/group_detail.html

@@ -10,6 +10,7 @@
         </p>
         <p>
             <a href="{% url "start_game" pk=group.pk %}" role="button"><i class="ri-play-fill"></i> Lancer une partie</a>
+            <a href="{% url "group_clear_blacklist" pk=group.pk %}" role="button"><i class="ri-history-fill"></i> Effacer la blacklist</a>
         </p>
     {% endif %}
     {% if group.musikgame_set %}

game/urls.py

@@ -41,4 +41,9 @@ urlpatterns = [
         views.YoutubeCallbackView.as_view(),
         name="youtube_callback",
     ),
+    path(
+        "group/<int:pk>/clear_blacklist/",
+        views.GroupClearBlacklistView.as_view(),
+        name="group_clear_blacklist",
+    ),
 ]

game/views.py

@@ -246,3 +246,12 @@ class YoutubeCallbackView(LoginRequiredMixin, View):
             },
         )
         return redirect("/")
+
+
+class GroupClearBlacklistView(OwnerFilterMixin, SingleObjectMixin, View):
+    model = models.Group
+
+    def get(self, request, pk):
+        group = self.get_object()
+        group.musicvideo_set.filter(blacklisted=True).update(blacklisted=False)
+        return redirect(group)