Rails - Jun 2007 - How can I use form fields in link_to parameters?

Don''t know how to use a link_to directive where one of the parameters
is
taken form a form field (client side), eg:

...
#
# The field "numrows" is used to dynamically change the number of rows
per page
# in a pager (ok, let apart will_paginate and other paginate plugins)
#
<label for="numrows">#Rows per Page : </label>
<%= text_field_tag "numrows",  session[:nr] ||
Customer.per_page, :size
=> 5 %>
<%= link_to ''Change #Rows per Page'', {:action =>
''set_row_per_page'',
:rowsperpage => <would like to pass here the content of
"numrows"
field>, :method => :post, :class => "IsALink"  %>

Note that "numrows" is a non-model field of the form.

How can i dynamically set the value of ":rowsperpage" so that clicking
on the link  will restart pagination with a differente number of rows
per page. I need to know how to dynamically set up the value of the
parameter using something link $(''numrows'').value

Any help appreciated.


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Hi gattox,

gattox wrote:
> Don''t know how to use a link_to directive where one
> of the parameters is taken form a form field (client side), eg:
<snip>
> <%= link_to ''Change #Rows per Page'', {:action =>
''set_row_per_page'',
> :rowsperpage => <would like to pass here the content of
"numrows"
> field>, :method => :post, :class => "IsALink"  %>
>
> Note that "numrows" is a non-model field of the form.
>
> How can i dynamically set the value of ":rowsperpage" so
> that clicking on the link  will restart pagination with a differente
> number of rows per page. I need to know how to dynamically
> set up the value of the parameter using something link
> $(''numrows'').value
I can''t think of any way to do this with link_to.  Remember that
link_to is
a server-side helper method that''s generating an html <a ...> tag
to send to
the client.  There might be a way to use client-side javascript to modify 
the tag, but it doesn''t feel like a Rails-ish approach to me.

If it were me, I''d ditch the link-based submission and just use 
observe_field on the text_field or drop-down (select) to trigger the 
repagination action.

hth,
Bill 



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