Exception: ActionController::UnpermittedParameters

Inherits:

StandardError

• Object
• StandardError
• ActionController::UnpermittedParameters

Defined in:

runtime/action_controller/exceptions.rb,
runtime/action_controller/exceptions.rbs

Overview

Named by rescue_from clauses. No runtime path raises either: strong parameters do not reject unpermitted keys, and a format an action does not answer is resolved by the lowering. They exist because a rescue clause evaluates its class list whenever an exception passes through it — an undefined name there turns every other error the action raises into a NameError that hides the real one.