Simple UJS Fields

rubyonrails-talk
1

Hello,

I have the view:

<% form_tag '/' do %>   <%= number_field_tag(:number_one) %>   <%= number_field_tag(:number_two) %>   <%= submit_tag 'Calculate' %> <% end %> <%= @number %>

and the controller:

def add   numberone = params[:number_one].to_f   numbertwo = params[:number_two].to_f   @number = numberone + numbertwo end

I am trying to learn some ujs in rails with this example, but I can't get it to work. I would like it to not refresh the page to load @number unobtrusively. Every time I try the submit_tag just stops working. I have read many tutorials and such teaching how to get form_for forms to use javascript, but not an example as simple as mine. Should I create a .js file named add.js? ect. ect.

Point me in the right direction?

Thanks

2

Do you mean Ajax, or UJS? UJS is unobtrusive JavaScript which means the JavaScript handling code is decorated on the HTML AFTER the page loads so that it doesn't make the HTML invalid and so that things like Braille readers still work with it.

RJS on the other hand is Ajax where parts of the page are updated independently of the whole page.

You say UJS but you talk as if you mean AJAX using RJS templates.

There are good simple examples all over the web for both of these.

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