NoneOf class

Bases: RoleTraitsFilter

Select traits depending on whether none of the user roles belong to the filter or not.

Available in Taipy Enterprise only

This class exists only in the Enterprise edition of Taipy.

NoneOf is a role traits filter that recursively selects role traits depending on the user roles: get_traits() returns the success value if the credentials do not hold any of the filter roles and failure if they do.

Example

You can create an NoneOf role traits filter with the following code:

my_filter = NoneOf(["role1", "role2"], "No role is present")

Let's pretend that a user is identified by the credentials instance of Credentials.

• If the credentials hold any of "role1" or "role2", then my_filter.get_traits(credentials) returns None, which is the default value for the failure case.
• If the credentials hold any set of roles except "role1" or "role2", then my_filter.get_traits(credentials) returns the string "No role is present", which is the value that was set for the success case.

Methods

__init__()

__init__(
    filters: Union[str, List[str], Set[str]],
    success: Optional[Union[RoleTraits, Any]],
    failure: Optional[Union[RoleTraits, Any]] = None,
) -> None

Initialize a None Role Traits filter.

Parameters:

Name	Type	Description	Default
filters	Union[str, List[str], Set[str]]	The role or set of roles to filter.	required
success	Optional[Union[RoleTraits, Any]]	The role traits that are returned if none of the user roles appear in filters, if the user has no roles or if filters is empty.	required
failure	Optional[Union[RoleTraits, Any]]	The role traits that are returned if any of the user roles exists in filters.	None

get_traits()

get_traits(credentials: Optional[Credentials]) -> Any

Return the role traits for the indicated credentials.

This method is recursive: role traits filters (see AnyOf, AllOf or NoneOf) can hold both a role traits value, that the application can use in its logic, or a RoleTraits instance. In this latter case, this role traits filter is processed for further role traits selection.

Parameters:

Name	Type	Description	Default
credentials	Optional[Credentials]	The credentials that are used to compute the roles traits.	required

Returns:

Name	Type	Description
Any	Any	The role traits corresponding to the roles held in credentials. An empty set is returned if credentials is not an instance of Credentials.