def _get_or_create_history(obj):
"""
Get or create the history dict for this object.
Gets or sets OBJECT_ATTRIBUTE on object. Get or sets attribute
REQUEST_ATTRIBUTE on request. Get or creates history item for object
on request attribute and returns that.
"""
if not hasattr(obj, OBJECT_ATTRIBUTE):
setattr(obj, OBJECT_ATTRIBUTE, utils.object_hash(obj))
obj_hash = getattr(obj, OBJECT_ATTRIBUTE)
if not hasattr(utils.active_request(), REQUEST_ATTRIBUTE):
setattr(utils.active_request(), REQUEST_ATTRIBUTE, {})
history = getattr(utils.active_request(), REQUEST_ATTRIBUTE)
if not obj_hash in history:
history[obj_hash] = {SIGNALS_KEY: []}
return history[obj_hash]
def db_handler(sender, instance, signal_name, raw=None, **kwargs):
"""
Store old and new objects on the active request.
"""
if raw or not utils.active_request():
return
history = _get_or_create_history(instance)
history[SIGNALS_KEY].append(signal_name)
history[INSTANCE_KEY] = instance
# Store initial status of the object on the request.
if signal_name.startswith('pre_') and not PRE_COPY_KEY in history:
history[PRE_COPY_KEY] = _get_db_copy(instance)
def process_request_handler(**kwargs):
"""
Log any changes recorded on the request object.
"""
if not hasattr(utils.active_request(), REQUEST_ATTRIBUTE):
return
try:
actions = getattr(utils.active_request(), REQUEST_ATTRIBUTE).values()
except AttributeError:
return
logged_models = set()
for action in actions:
pre_copy = action[PRE_COPY_KEY]
post_copy = _get_db_copy(action[INSTANCE_KEY])
signals = [s for s in action[SIGNALS_KEY]
if s in ('post_save', 'post_delete')]
if len(signals) <= 0:
continue
last_signal = signals[-1]
if last_signal == 'post_save':
obj = post_copy
action_flag = (utils.LIZARD_CHANGE if pre_copy else
utils.LIZARD_ADDITION)
elif last_signal == 'post_delete':
obj = pre_copy
action_flag = utils.LIZARD_DELETION
else:
continue
# Custom handling starts here
if utils.is_object_of(obj, ESF_MODELS):
if logged_models.intersection(ESF_MODELS):
continue # Already logged the esf data
else:
object_repr = obj.area.ident
elif utils.is_object_of(obj, WBCONFIGURATION_MODELS):
if logged_models.intersection(WBCONFIGURATION_MODELS):
continue # Already logged the wbconfiguration data
else:
object_repr = obj.area.area.ident
# Custom handling starts ends here
else:
object_repr = force_unicode(obj)
change_message = utils.change_message(
old_object=pre_copy,
new_object=post_copy,
instance=action['instance'],
)
# Don't log if nothing was changed.
if change_message is None:
return
# Insert a log entry in django's admin log.
LogEntry.objects.log_action(
user_id=utils.user_pk(),
content_type_id=utils.get_contenttype_id(obj),
object_id=obj.pk,
object_repr=object_repr,
action_flag=action_flag,
change_message=change_message,
)
logged_models.add(utils.model_for_object(obj))