Add a method to query the current phase

apps/participation/models.py

@@ -193,6 +193,16 @@ class Phase(models.Model):
         default=timezone.now,
     )
 
+    @classmethod
+    def current_phase(cls):
+        qs = Phase.objects.filter(start__lte=timezone.now(), end__gte=timezone.now())
+        if qs.exists():
+            return qs.get()
+        qs = Phase.objects.order_by("phase_number").all()
+        if timezone.now() < qs.first().start:
+            return qs.first()
+        return qs.last()
+
     def __str__(self):
         return _("Phase {phase_number:d} starts on {start:%Y-%m-%d %H:%M} and ends on {end:%Y-%m-%d %H:%M}")\
             .format(phase_number=self.phase_number, start=self.start, end=self.end)