Rails 3 remote link with :condition and mootools -

back in rails 2, there :condition option in link_to_remote let specify javascript had return true or remote request not send. however, in rails 3 seems options has been removed.

what want have ajax form, needs undergo validation on browser before gets submitted (this non-standard validation). need able set conditional javascript expression prevent form being submitted if validation fails - same :condition option rails 2. there way achieve same functionality again in rails 3?

i'm using mootools mootools version of rails.js. looked through mootools rails.js file , didn't see looked let me specify conditional javascript. missing something?

*note: looked through source default rails.js file written in prototype. in file there there following lines:

var event = element.fire("ajax:before"); if (event.stopped) return false; 

this looks in prototype version can stop request being sent listening "ajax:before" event , stopping event in listener. however, can't find in mootools rails.js code, maybe bug in mootools rails.js file?

link_to_remote deleted rails 3. it's link_to :remote => true now. , if want js validation, can use this:

<%= link_to "test", '/test', :id => "test-link", :remote => true  %> 

and add validation in application.js (in example it's prototype. , it's not problem mootools guess):

document.observe("dom:loaded", function() {   $('test-link').observe('click', function(event){     if your_validation_magic       event.stop();   }); }); 

update: mootools has event too: https://github.com/kevinvaldek/mootools-ujs/blob/master/source/rails.js#l131