def diff_fields(old, new):
# If content type doesn't match, we can't tell the difference
if new.content_type_id != old.content_type_id:
return None
is_new_full, new = deserialize(new.serialized_data)
is_old_full, old = deserialize(old.serialized_data)
if is_new_full and is_old_full:
return model_diff_fields(old.object, new.object)
def versions_diff(old, new, full=False):
'''
Calculate (as possible) difference between two revisions.
:return:
List of dicts with keys:
* ``field_name'';
* ``field_verbose_name'';
* ``old'';
* ``new''.
'''
# If content type doesn't match, we can't tell the difference
if old.content_type_id != new.content_type_id:
return None
is_new_full, new = deserialize(new.serialized_data)
is_old_full, old = deserialize(old.serialized_data)
if is_new_full and is_old_full:
return model_diff(old.object, new.object, full=full)
def deserialize_version(version):
return deserialize(version.serialized_data, version.format)