Tokeninput is a jQuery plugin which allows your users to select multiple items from a predefined list, using autocompletion as they type to find each item. You may have seen a similar type of text entry when filling in the recipients field sending messages on facebook.
Full details and documentation can be found on the project page here:
http://loopj.com/jquery-tokeninput/
Similar to the onAdd function, but runs at the very beginning of the add_token method.
Example Usage:
javascripts/components/file.js.coffee
$(‘.js-some-input’).tokenInput AppRoutes.some_path({foo: bar}),
onBeforeAdd: ( item ) ->
# When false is returned the entire `add_token` method is halted — the token is not added and the dropdown is not dismissed.
if item.is_disabled
return false