Moved RecentDocument manager to a separate managers.py file

apps/documents/managers.py

@@ -0,0 +1,15 @@
+from datetime import datetime
+
+from django.db import models
+
+from documents.conf.settings import RECENT_COUNT
+
+
+class RecentDocumentManager(models.Manager):
+    def add_document_for_user(self, user, document):
+        self.model.objects.filter(user=user, document=document).delete()
+        new_recent = self.model(user=user, document=document, datetime_accessed=datetime.now())
+        new_recent.save()
+        to_delete = self.model.objects.filter(user=user)[RECENT_COUNT:]
+        for recent_to_delete in to_delete:
+            recent_to_delete.delete()