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New version of delete, which marks as delete instead of removing an
[plstackapi.git]
/
planetstack
/
core
/
models
/
plcorebase.py
diff --git
a/planetstack/core/models/plcorebase.py
b/planetstack/core/models/plcorebase.py
index
30d4df3
..
fc8e740
100644
(file)
--- a/
planetstack/core/models/plcorebase.py
+++ b/
planetstack/core/models/plcorebase.py
@@
-1,16
+1,43
@@
+import datetime
import os
import os
+import sys
from django.db import models
from django.forms.models import model_to_dict
from django.db import models
from django.forms.models import model_to_dict
-from openstack.event_manager import EventSender
+from django.core.urlresolvers import reverse
+from django.forms.models import model_to_dict
+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()
-class PlCoreBase(models.Model):
+ # guard against something failing
+ def notify_observer(*args, **kwargs):
+ pass
+
+# This manager will be inherited by all subclasses because
+# the core model is abstract.
+class PlCoreBaseManager(models.Manager):
+ def get_query_set(self):
+ return super(PlCoreBaseManager, self).get_query_set().filter(deleted=False)
- 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.
+class PlCoreBase(models.Model):
+ objects = PlCoreBaseManager()
+ 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)
enacted = models.DateTimeField(null=True, default=None)
+ backend_status = models.CharField(max_length=140,
+ default="Provisioning in progress")
+ deleted = models.BooleanField(default=False)
class Meta:
class Meta:
+ # Changing abstract to False would require the managers of subclasses of
+ # PlCoreBase to be customized individually.
abstract = True
app_label = "core"
abstract = True
app_label = "core"
@@
-36,14
+63,39
@@
class PlCoreBase(models.Model):
def get_field_diff(self, field_name):
return self.diff.get(field_name, None)
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
+ if (observer_disabled):
+ super(PlCoreBase, self).delete(*args, **kwargs)
+ else:
+ self.deleted = True
+ self.enacted=None
+ self.save(update_fields=['enacted','deleted'])
+
+
def save(self, *args, **kwargs):
super(PlCoreBase, self).save(*args, **kwargs)
def save(self, *args, **kwargs):
super(PlCoreBase, self).save(*args, **kwargs)
-
- # T
ell the observer that the source database has been updated
-
EventSender().fire
()
+
+ # T
his is a no-op if observer_disabled is set
+
notify_observer
()
self.__initial = self._dict
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
@property
def _dict(self):
return model_to_dict(self, fields=[field.name for field in