Form Blocks

Rails
1

Hi,

How do I get a value out of a form block
eg.
<% form_for :order do |form_block| %>
<%= form_block.text_field :name, :size => 40 %>
<% end %>

If within that block I wanted to get the value of an attribute like
age, how cold you get that from the form_block instance? eg
form_block.age (i realise this does not work). I could just do
@order.age but I need to check from a helper where the block is only
sen to it.

Thanks

2

I think, you trying to implement something like observe field on name
to get age.
You can
<%= observe_field ‘order_name’,
:frequency => 1,
:update => “UPDATE_SPAN/DIV/TEXTFIELD_ID_OF_AGE”,
:url => {:action => 'YOUR_ACTION_TO_GET_AGE '}%>

For more info on this ajax, refer this:
http://wiki.rubyonrails.org/rails/pages/observe_field+-+Passing+Parameters

Regards.

3

Hi Carolene,

Unfortunately, I have not explained myself properly… Great answer
though!

What I meant is:-
<% form_for :order do |form_block| %>
<%= form_block.text_field :name, :size => 40 %>
<% some code here that could return the value of age that refers to
age via form_block (not @order) eg form_block.age %>
<% end %>

4

Hi –

On Sun, 12 Aug 2007, nigel.bris wrote:

age, how cold you get that from the form_block instance? eg
form_block.age (i realise this does not work). I could just do
@order.age but I need to check from a helper where the block is only
sen to it.

I believe in edge you can do: form_block.object, and in non-edge you
can at least do form_block.object_name. I might be wrong about the
edge/non-edge distinction; it’s based on some quick trials, where <%=
debug f.object %> got me nil in non-edge.

David

–