def lazy_loader():
"""Lazy load diff for revisions."""
referenced_objects.rewarm_cache()
instance = referenced_objects.get(self.resource_type,
self.resource_id)
meta_dict = {}
if instance:
instance_meta_info = meta_info.MetaInfo(instance)
meta_dict["mandatory"] = instance_meta_info.mandatory
return meta_dict
def changes_present(obj,
new_rev_content,
prev_rev_content=None,
obj_meta=None):
"""Check if `new_rev_content` contains obj changes.
Checks whether `new_rev_content` contains changes in `obj` state or not. If
`prev_rev_content` is not passed to this function, the latest revision of
`obj` will be taken. Note that in this case revision whose content is passed
as `new_rev_content` should not been saved in DB or no changes would be
detected since two equal contents will be compared.
Args:
obj: db.Model instance which last revision would be compared with
`new_revision` to detect presence of changes.
new_rev_content: Content of newer revision to ckeck for changes.
prev_rev_content: Content of older revision. Optional. If is not passed,
latest `obj` revision will be taken.
obj_meta: MetaInfo instance of `obj`. Optionla. If is not passed, will
be constructed manually.
Returns:
Boolean flag indicating whether `new_rev_content` contains any changes
in `obj` state comparing to `prev_rev_content`.
"""
new_rev_content = _normalize_content(new_rev_content)
if obj_meta is None:
obj_meta = meta_info.MetaInfo(obj)
if prev_rev_content is None:
prev_rev_content = get_latest_revision_content(obj)
if prev_rev_content is None:
return True
diff = prepare_content_full_diff(
instance_meta_info=obj_meta,
l_content=prev_rev_content,
r_content=new_rev_content,
)
return any(diff.values())
def is_identical_acr(instance, value_1, value_2):
"""Checks acls for identity"""
meta = meta_info.MetaInfo(instance)
result = generate_acl_diff(meta.acrs, value_1, value_2)
return len(result) == 0