undefined method sortable for jquery object

[naaano]

what i'm doing wrong?

Inspecting, active_scaffold_sortable.js has this error:

Uncaught TypeError: Object [object Object] has no method 'sortable'

at line https://github.com/activescaffold/active_scaffold_sortable/blob/master/app/assets/javascripts/jquery/active_scaffold_sortable.js#L39

content.sortable(sortable_options);

content is the jquery object which has all records: tbody#as_forms-3-fields-tbody.records

but "sortable" is not defined in jquery context.

[scambra]

jquery_ui is not loaded, you must use jquery-ui-rails gem if you use jquery-rails >= 3.0.0