Validation Function

The function expected by Prudence for validation.

([self[, parent]])

Arguments

• self (any) – The object’s value for this key. This can be anything.

• parent (object) – The object the above value came from.

Attribute string errorMessage

An error message for Prudence to display if this function returns false.

Returns

boolean

Note

This function is allowed to return truthy/falsy values, but it is not prefered.