Cannot override data in ajax:beforeSend Event

I try to send some data with a post ajax request like this and in the server side i dont receive the data (but i do see the value in firebug)

$('a[data-with], a[data-submit]').live('ajax:beforeSend', function(event, xhr, settings) {
      settings.data = "name=John&time=2pm";
});

but if im doing like this it s working

$('a[data-with], a[data-submit]').live('ajax:beforeSend', function(event, xhr, settings) {
      settings.url += "?name=John&time=2pm";
});

My route is configured as a POST method

resources :categories do
      collection do 
        post :addcategory
      end
    end

What im doing wrong ?

[regis-leray]

Oki im pretty satisfied with the solution to use the ajax:before like i did.

But i m still convinced there is an issue with this line in jquery-ujs.js(line 115)

data = element.data('params') || null; data

and we need at on point to clean the data store in the current element by doing

element.removeData('params')

if not if you change the data after the first submission, it will continue to send the same value.

to get working this is what i was doing

//clean the attribute, dont need anymore
    $('a[data-with], a[data-submit]').live('ajax:complete', function(event, xhr, status) {
      var el = $(this);
      el.removeData('params');
    });

[ramontayag]

Hey @JangoSteve, I tried to do this with forms, but after reading the code a little bit more closely, it seems that data-params was only for rails.inputChangeSelector and non-forms. Did I read it right?

How would you go about appending data to a form before sending it out? I have one already in a long serialized string that I get from another plugin, and would simply like to append it to the data of the form.

Thanks!