add a latest method to query the latest x events

src/mahjong_ranking/mixins.py

@@ -0,0 +1,18 @@
+from datetime import date
+from .models import Hanchan, SeasonRanking
+from events.models import Event
+
+
+class MahjongMixin(object):
+    def get_context_data(self, **kwargs):
+        context = super(MahjongMixin, self).get_context_data(**kwargs)
+        try:
+            context['season'] = self.season
+            context['season_start'] = date(year=self.season, month=1, day=1)
+            context['season_end'] = date(year=self.season, month=12, day=31)
+            context['season_list'] = SeasonRanking.objects.season_list
+        except AttributeError:
+            pass
+        context['latest_hanchan_list'] = Hanchan.objects.confirmed()[:3]
+        context['latest_event_list'] = Event.objects.latest(limit=3)
+        return context