def get_extra_history_fields(self, model):
"""
Extra, non-essential fields for the historical models.
If you subclass TrackChanges this is a good method to over-ride:
simply add your own values to the fields for custom fields.
NOTE: Your custom fields should start with history_ if you want them
to be looked up via hm.history_info.fieldname
Returns:
A dictionary of fields that will be added to the historical
record model.
"""
attrs = {
'history_comment':
models.CharField(max_length=200, blank=True, null=True),
'history_user':
fields.AutoUserField(null=True),
'history_user_ip':
fields.AutoIPAddressField(null=True),
'__unicode__':
lambda self: u'%s as of %s' %
(self.history__object, self.history_date)
}
return attrs
def get_extra_history_fields(self, model):
"""
Extra, non-essential fields for the historical models.
If you subclass ChangesTracker this is a good method to over-ride:
simply add your own values to the fields for custom fields.
NOTE: Your custom fields should start with history_ if you want them
to be looked up via hm.version_info.fieldname
Here's an example of extending to add a descriptive textfield::
def get_extra_history_fields(self, model):
# Keep base_attrs -- we like user tracking!
attrs = super(MyTrackChanges, self).get_extra_history_fields()
attrs['history_long_description'] = models.TextField(
blank=True, null=True)
return attrs
Returns:
A dictionary of fields that will be added to the historical
record model.
"""
def _history_user_link(m):
if m.version_info.user:
user = m.version_info.user
return '<a href="%s">%s</a>' % (user.get_absolute_url(), user)
else:
if getattr(settings, 'SHOW_IP_ADDRESSES', True):
return m.version_info.user_ip
else:
return 'unknown'
attrs = {
'history_comment':
models.CharField(max_length=200, blank=True, null=True),
'history_user':
fields.AutoUserField(null=True),
'history_user_ip':
fields.AutoIPAddressField(null=True),
'history_user_link':
_history_user_link,
'__unicode__':
lambda self: u'%s as of %s' %
(self.history__object, self.history_date),
}
return attrs