def hasDependents(self, item):
# We cannot adapt security-proxied objects to IDependable. Unwrapping
# is safe since we do not modify anything, and the information whether
# an object can be deleted or not is not classified.
unwrapped_context = removeSecurityProxy(item)
dependable = IDependable(unwrapped_context, None)
if dependable is None:
return False
else:
return bool(dependable.dependents())
def CheckDependency(event):
object = event.object
dependency = IDependable(object, None)
if dependency is not None:
dependents = dependency.dependents()
if dependents:
mapping = {
"object": zapi.getPath(object),
"dependents": ", ".join(dependents)
}
raise DependencyError(Message(exception_msg, mapping=mapping))
def demographics(self):
pos = 0
result = []
for demo in self.context.values():
dependable = IDependable(removeSecurityProxy(demo), None)
removable = dependable is None or not dependable.dependents()
pos += 1
result.append({
'name': demo.__name__,
'title': demo.title,
'pos': pos,
'removable': removable,
})
return result
def demographics(self):
pos = 0
result = []
for demo in self.context.values():
dependable = IDependable(removeSecurityProxy(demo), None)
removable = dependable is None or not dependable.dependents()
pos += 1
result.append({
'name': demo.__name__,
'title': demo.title,
'pos': pos,
'removable': removable,
})
return result
def has_dependents(self):
"""Check whether an object has dependents (via IDependable).
Objects that have dependents cannot be removed from the system.
Sample usage in a page template:
<input type="checkbox" name="delete"
tal:attributes="disabled obj/schooltool:has_dependents" />
"""
# We cannot adapt security-proxied objects to IDependable. Unwrapping
# is safe since we do not modify anything, and the information whether
# an object can be deleted or not is not classified.
unwrapped_context = removeSecurityProxy(self.context)
dependable = IDependable(unwrapped_context, None)
if dependable is None:
return False
else:
return bool(dependable.dependents())
def render(self, *args, **kw):
unwrapped = removeSecurityProxy(self.context)
dependable = IDependable(unwrapped, None)
if dependable is None or not bool(dependable.dependents()):
return super(GroupDeleteLink, self).render(*args, **kw)
def render(self, *args, **kw):
dep = IDependable(removeSecurityProxy(self.context), None)
if (dep is not None and dep.dependents()):
return ''
return flourish.page.ModalFormLinkViewlet.render(self, *args, **kw)
def render(self, *args, **kw):
unwrapped = removeSecurityProxy(self.context)
dependable = IDependable(unwrapped, None)
if dependable is None or not bool(dependable.dependents()):
return super(GroupDeleteLink, self).render(*args, **kw)
def render(self, *args, **kw):
dep = IDependable(removeSecurityProxy(self.context), None)
if (dep is not None and dep.dependents()):
return ''
return flourish.page.ModalFormLinkViewlet.render(self, *args, **kw)
