Checking form values inside RJS

rubyonrails-talk
1

I'm testing a small bit of functionality using RJS. I have a form with a radio-button set -- a Yes button and No button -- and a text input.

I'm using observe_form to send the entire form to the server, instead of observe_field.

What I'd like to happen is to have the text input hidden if I click Yes and the text input displayed if I click No.

In order to decide what action to perform -- show or hide -- I need to know the value of the radio button. I imagine that my rjs template would look something like this

if value_of_radio == "Yes" page["textinput"].hide else page["textinput"].Show end

I just don't know how to get that value_of_radio populated.

Any suggestions or pointers will be much appreciated. It could be that I'm missing something simple, or maybe I'm going about this all wrong.

2

The input values will be in params, just like with any other request.

3

Are you sending the request to the server simply so you can hide or unhide a field? If so you should just use js and an onclick event.

4

Looking at the API you can keep the observe_form tag and pass it a straight JS function.

observe_field("glass", :frequency => 1, :function => "alert('Element changed')")

5

Thanks for this reply. I couldn't get the params thing to work until I read this thread:

Now it's looking good. Appreciate it!