Collection_select ajax.Updater InvalidAuthenticityToken

Rails
1

Hi,

I’m currently using the latest version of rails 2.0.2 with cookies.
My problem is as follows, to which I’ve not found any help on google
etc.

I have a page which presents the user with two drop-down menus. The
first one, for example, asks for a car manufacurer, and the second,
which by default is blank, will ask for the model. Within my view I
use the following

<%= collection_select(:manufacturer, :manufacturer_id,
@manufacturers, :id, :description, options ={:prompt => “-Select a
Manufacturer”},
{
:onChange => “new Ajax.Updater(‘manufacturer_model_id’, ‘/
models/list_by_manufacturer_id/’+ this[this.selectedIndex].value,
{asynchronous:true, evalScripts:true})”
}
) %>

<%= collection_select(:manufacturer, :model_id,
@models, :id, :description, options ={:prompt => “-Select a model”})%>

The above works fine. When I choose a manufacturer from the first
selection it fires the js but rails then returns an error:

ActionController::InvalidAuthenticityToken
in ModelController#list_by_manufacturer_id

I believe the problem might be because I need to pass the
authenticity_token as part of the request, though I’m not sure, and if
so I’m uncertain as to how I go about passing it within the ajax call.

Any help/direction would be greatly appreciated

2

seems i might be getting a little closer with the following code

<%= collection_select(:manufacturer, :manufacturer_id,
@manufacturers, :id, :description, options ={:prompt => “-Select a
Manufacturer”},
{
:onChange =>
link_to_remote("",:update=>"manufacturer_model_id’,:url=>{:controller=>:models,
:action=>:list_by_manufacturer_id})
}

     ) %>

This seems to create the HTML etc correctly with the
authenticity_token, but when I click on the select list nothing is
every fired - no ajax call is ever made.

Any ideas?

3

dispite hoping to use link_to_remote I’ve ended up manually typing the
following;

<%= collection_select(:manufacturer, :manufacturer_id,
@manufacturers, :id, :description, options ={:prompt => “-Select a
Manufacturer”},
{
:onChange =>
“new Ajax.Updater
(‘member_id_selection’,
‘/models/list_by_manufacturer_id/’+
this[this.selectedIndex].value,
{asynchronous:true, evalScripts:true,
parameters:‘authenticity_token=’+
encodeURIComponent(’”+form_authenticity_token.to_s+"’)}
)"
) %>

This actually works but seems but surely the helper method should have
worked. Does anyone knoe whether I could redo this in a far cleaner
way, i.e. using a helper?

thanks

4

thanks, that actually worked. I knew i must have been missing
something.

thanks again

On Jan 2, 11:25 am, Frederick C. [email protected]

5

On 2 Jan 2008, at 10:59, hiddenhippo wrote:

("",:update
This seems to create the HTML etc correctly with the
authenticity_token, but when I click on the select list nothing is
every fired - no ajax call is ever made.

link_to_remote actually creates an with an onclick that does the
ajaxy stuff. In this sort of situation you want to use remote_function
(takes basically the same arguments as link_to_remote, barring of
course the first one)

Fred

6

The code in question would lie in the view rather than the
controller. Stealing blindly from what was posted above:

<%= collection_select(:manufacturer, :manufacturer_id,
@manufacturers, :id, :description,
{:prompt => “-Select a Manufacturer”},
{ :onChange =>
remote_function(:url=>…, :method=>…, :with=>“manufacturer_id”)}
) %>

On May 13, 5:43 am, William Notowidagdo <rails-mailing-l…@andreas-

7

hiddenhippo wrote:

thanks, that actually worked. I knew i must have been missing
something.

thanks again

can you show me your controller? i have the same problem too.

thanks

–william

8

thank you all. my problem is done