Re: AJAX how to replace DOM object's value from controller

Sat, 28 Apr 2007 05:14:13 -0700

Thanks Ben.  I'll give that approach a try.

ben adam wrote: 
the way i do it is by using the webhelpers as follows (using myghty):

from template:
 <form ..>
 ... your select options, etc...
 <span id="txtfld"><% h.text_field("res", value=initial_val) %></span>
  </form>
 <% h.observe_form("your_form_with_select",
url="" update="txtfld", with='value') %>

and from controller:
  new_val = request.params.get('val')
  return Response(h.text_field("res", value=new_val))


On Apr 27, 6:15 am, Dan <[EMAIL PROTECTED]> wrote:
  
Would someone give an example how I could replace a DOM object from the
controller?

For example, I have an onChange for a <select> that calls a function
within the controller.  The controller function is receiving the
this[this.selectedIndex].value (an integer).  I can pass the int value
from the <select> onChange into the controller, storing it as c.value.
I want the controller to take c.value and update the 'value' of a text
field on the same page without a refresh.

All I can figure out is how to replace an entire element, such as, a
<div> or the entire <input> by return render_response('some_template')

Thanks!

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