Rails - Apr 2006 - Forms, view & AJAX best practice help

What i''m trying to get working is I have a controller called 
"permissions" and a view "permissions.rhtml". This view has
a hidden div
that contains a form for adding new roles. Its just a single textfield. 
Also on the page I have a dropdown list of roles and then underneath 
that a div that contains a list of permissions for the role selected in 
the dropdown. I have a link that when clicked makes the hidden form div 
visible.

What I would like is for the form to submit via AJAX to a new_role 
controller method. Any errors would be highlighted in my 
"error_messages_for ''role''" call at the top of the
permissions.rhtml
file. When it has submitted correctly the dropdown list would be updated 
with the new selection.

What I have got so far is that the page wants to show a "new_form"
page?

-- 
Posted via http://www.ruby-forum.com/.

James Whittaker wrote:
> What i''m trying to get working is I have a controller called 
> "permissions" and a view "permissions.rhtml". This view
has a hidden div
> that contains a form for adding new roles. Its just a single textfield. 
> Also on the page I have a dropdown list of roles and then underneath 
> that a div that contains a list of permissions for the role selected in 
> the dropdown. I have a link that when clicked makes the hidden form div 
> visible.
> 
> What I would like is for the form to submit via AJAX to a new_role 
> controller method. Any errors would be highlighted in my 
> "error_messages_for ''role''" call at the top of
the permissions.rhtml
> file. When it has submitted correctly the dropdown list would be updated 
> with the new selection.
> 
> What I have got so far is that the page wants to show a
"new_form" page?
Ok I will rephrase it:

How can I get Error messages to show when using ajax form submit?

-- 
Posted via http://www.ruby-forum.com/.

James
    > How can I get Error messages to show when using ajax form submit?

In the controller''s response to the submit, you will send an html 
fragment with RJS code like:
     ...
     page.replace_html "the_div_id", :partial =>
''some_html_fragment''
     ...


The trick is for the html fragment to include the error displaying Rails 
code :
        ...
       <%= error_messages_for ''foo'' %>
       ....


Alain

or you could do something like this without having to use a partial

         render :update do |page|
            page.replace_html ''address_errors'',
:inline=>"<%=
error_messages_for :address %>"
         end

-- 
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