from django.dispatch import receiver
import pdb
from core.models import *
+from dependency_walker import *
import model_policies
+modelPolicyEnabled = True
+
+def EnableModelPolicy(x):
+ global modelPolicyEnabled
+ modelPolicyEnabled = x
+
+def update_dep(d, o):
+ if (d.updated < o.updated):
+ d.save(update_fields=['updated'])
+
+def delete_if_inactive(d, o):
+ #print "Deleting %s (%s)"%(d,d.__class__.__name__)
+ d.delete()
+ return
+
@receiver(post_save)
def post_save_handler(sender, instance, **kwargs):
+ if not modelPolicyEnabled:
+ return
+
sender_name = sender.__name__
policy_name = 'model_policy_%s'%sender_name
if (not kwargs['update_fields']):
+ # Automatic dirtying
+ walk_inv_deps(update_dep, instance)
+
try:
- policy_handler = getattr(model_policies, policy_name)
- policy_handler.handle(instance)
+ policy_handler = getattr(model_policies, policy_name, None)
+ if policy_handler is not None:
+ policy_handler.handle(instance)
except:
pass
+ elif 'deleted' in kwargs['update_fields']:
+ walk_inv_deps(delete_if_inactive, instance)
+