def has_value(self, **kwargs):
""" Has value?
"""
state = kwargs.get('state', None)
value = self.get_value(**kwargs)
if not state:
return bool(value)
relations = set(rel for rel in self.relations(state))
for doc in value:
ctype = queryContentType(doc)
if not ctype:
continue
name = ctype.getId()
if name not in relations:
continue
relations.remove(name)
if not relations:
return True
return False
def __call__(self, value, instance, *args, **kwargs):
""" Validate
"""
if not value:
return 1
if not isinstance(value, (tuple, list)):
value = value,
ctool = getToolByName(instance, 'portal_catalog')
brains = ctool(UID={'query': value, 'operator': 'or'})
relations = set(self.relations(instance))
if not relations:
return 1
for brain in brains:
doc = brain.getObject()
if not doc:
continue
ctype = queryContentType(doc)
if not ctype:
continue
name = ctype.getId()
if name not in relations:
continue
relations.remove(name)
if not relations:
return 1
rtool = getToolByName(instance, 'portal_relations')
names = [rtool[rel].title_or_id() for rel in relations]
return "Requires relations with: %s" % ', '.join(names)
