Add the metadata to the touchable relations if the touch option was provided.
@example Add the touchable.
Model.touchable(meta)
@param [ Metadata ] metadata The relation metadata.
@return [ Class ] The model class.
@since 3.0.0
# File lib/mongoid/relations/touchable.rb, line 19 def touchable(metadata) if metadata.touchable? name = metadata.name method_name = define_relation_touch_method(name) after_create method_name after_destroy method_name after_touch method_name end self end