Validate filter condition value based on condition type

Validates a filter condition value according to the requirements of its condition type. "node type" values are one or more node kinds from get_allowed_node_types() (excluding "Any node"), combined as a logical OR; the other types take a single character string (empty allowed).

Usage

validate_filter_condition_value(type, value)

Arguments

type

Character. The condition type that determines validation requirements

value

Character. The value to validate

Value

Character error message if invalid, NULL if valid