+import datetime
import os
+import sys
from django.db import models
from django.forms.models import model_to_dict
from django.core.urlresolvers import reverse
from django.forms.models import model_to_dict
-# This is a no-op if observer_disabled is set to 1 in the config file
-from observer import *
+
+try:
+ # This is a no-op if observer_disabled is set to 1 in the config file
+ from observer import *
+except:
+ print >> sys.stderr, "import of observer failed! printing traceback and disabling observer:"
+ import traceback
+ traceback.print_exc()
+
+ # guard against something failing
+ def notify_observer(*args, **kwargs):
+ pass
class PlCoreBase(models.Model):
- created = models.DateTimeField(auto_now_add=True)
- updated = models.DateTimeField(auto_now=True)
+ # default values for created and updated are only there to keep evolution
+ # from failing.
+
+ created = models.DateTimeField(auto_now_add=True, default=datetime.datetime.now())
+ updated = models.DateTimeField(auto_now=True, default=datetime.datetime.now())
enacted = models.DateTimeField(null=True, default=None)
class Meta:
def get_field_diff(self, field_name):
return self.diff.get(field_name, None)
+ def can_update(self, user):
+ if user.is_readonly:
+ return False
+ if user.is_admin:
+ return True
+ return False
+
def delete(self, *args, **kwds):
# so we have something to give the observer
pk = self.pk
self.__initial = self._dict
+ def save_by_user(self, user, *args, **kwds):
+ if self.can_update(user):
+ self.save(*args, **kwds)
+
+ def delete_by_user(self, user, *args, **kwds):
+ if self.can_update(user):
+ self.delete(*args, **kwds)
+
@property
def _dict(self):
return model_to_dict(self, fields=[field.name for field in