[teams] Closes issue #406

beat/web/team/api.py

@@ -42,7 +42,7 @@ from .serializers import TeamUpdateSerializer
 from .models import Team
 from .permissions import IsOwner, HasPrivacyLevel
 
-from ..common.responses import BadRequestResponse
+from ..common.responses import BadRequestResponse, ForbiddenResponse
 from ..common.mixins import CommonContextMixin
 
 
@@ -117,6 +117,11 @@ class TeamDetailView(CommonContextMixin, generics.RetrieveUpdateDestroyAPIView):
 
     def delete(self, request, owner_name, team_name):
         team = self.get_queryset()
+
+        # Check that the team can still be deleted
+        if not(team.deletable()):
+            return ForbiddenResponse("The team isn't deletable (it has been used to share %d objects with its members)" % team.total_shares())
+
         team.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
 

beat/web/team/models.py

@@ -93,6 +93,32 @@ class Team(models.Model):
         return (self.owner.username, self.name)
 
 
+    def total_shares(self):
+
+        used_at = 0
+        used_at += self.shared_algorithms.count()
+        used_at += self.shared_databases.count()
+        used_at += self.shared_dataformats.count()
+        used_at += self.shared_environment.count()
+        used_at += self.shared_experiments.count()
+        used_at += self.shared_librarys.count()
+        used_at += self.shared_plotterparameters.count()
+        used_at += self.shared_plotters.count()
+        used_at += self.shared_searchs.count()
+        used_at += self.shared_toolchains.count()
+        used_at += self.usable_algorithm.count()
+        used_at += self.usable_library.count()
+        used_at += self.usable_plotterparameters.count()
+        used_at += self.usable_plotters.count()
+
+        return used_at
+
+
+    def deletable(self):
+
+        return not self.total_shares()
+
+
     #_____ Overrides __________
 
     def __unicode__(self):