added agenda item convenience methods

meeting_transparency/meetings/models.py

@@ -542,9 +542,46 @@ class AbstractAgendaItem(TimeStampedModel):
 
     def adjurn(self):
         self.motion.status = "ADJURNED"
-
         return self.motion
 
+    def move_up(self):
+        items = self.meeting.agenda_items
+        with transaction.atomic():
+            item_directly_above = items.filter(sort_order=self.sort_order + 1).first()
+            if item_directly_above:
+                item_directly_above.sort_order = self.sort_order 
+                item_directly_above.save()
+            self.sort_order += 1
+            self.save()
+
+    def move_down(self):
+        items = self.meeting.agenda_items
+        with transaction.atomic():
+            item_directly_below = items.filter(sort_order=self.sort_order - 1).first()
+            if item_directly_below:
+                item_directly_below.sort_order = self.sort_order 
+                item_directly_below.save()
+            self.sort_order -= 1
+            self.save()
+
+    def get_next(self):
+        items = self.meeting.agenda_items
+        nubmer_of_items = items.count()
+        for index in range(nubmer_of_items):
+            item = items.filter(sort_order=self.sort_order + index + 1).first()
+            if item:
+                return item
+        return None
+
+    def get_previous(self):
+        items = self.meeting.agenda_items
+        nubmer_of_items = items.count()
+        for index in range(nubmer_of_items):
+            item = items.filter(sort_order=self.sort_order - (index + 1)).first()
+            if item:
+                return item
+        return None
+
     def clean(self):
         motion_list = []
         for item in self.meeting.agenda_items.all():