cache_column   cache_column=   cache_column?   cache_finders?   child_scopes   custom_cache_column?   evaluate_method   scope_for   scopes_over?   should_create_friendly_id?  

cache_column	[RW]	The column used to cache the friendly_id string. If no column is specified, FriendlyId will look for a column named cached_slug and use it automatically if it exists. If for some reason you have a column named cached_slug but don‘t want FriendlyId to modify it, pass the option +:cache_column => false+ to {FriendlyId::ActiveRecord2#has_friendly_id has_friendly_id}.
child_scopes	[R]	An array of classes for which the configured class serves as a FriendlyId scope.
custom_cache_column	[R]