Rails - Jul 2009 - How to pass the value from radio button to controller?

Hi.

I used radio_button_tag.
and I want to pass the value of selected radio button to controller.

<%= radio_button_tag ''exp'', 1 %>
<%= radio_button_tag ''exp'', 2 %>

<%= link_to :action=>"do" %>
can i pass the radio button''s value to above method as a parameter?

Thanks in advance.

Hi serenobs,

On Sun, 2009-07-26 at 11:35 -0700, serenobs wrote:
> Hi.
> 
> I used radio_button_tag.
> and I want to pass the value of selected radio button to controller.
> 
> <%= radio_button_tag ''exp'', 1 %>
> <%= radio_button_tag ''exp'', 2 %>
> 
> <%= link_to :action=>"do" %>
> can i pass the radio button''s value to above method as a
parameter?
You can using link_to_remote, which generates an Ajax request.

<div id="radio_buttons">
  <%= radio_button_tag ''exp'', 1 %>
  <%= radio_button_tag ''exp'', 2 %>
</div>

<%= link_to_remote ''Submit now'', :url =>
{:action=>"do"}, :submit => ''radio_buttons''
%>

The selected radio button''s value will be accessable in your controller
method via the name you''ve given your radio buttons.  So in this case,
the ''do'' method in your controller would probably look
something like:

def do

  if params[:exp] = ''1''   #remember that params come back as
strings
    do_something
  elsif params[:exp] = ''2''
    do_something_else
  else
    handle_the_no_default_radio_button_case  # if you want one to be checked,
supply true as the third parameter
  end

  respond_to do |format|
    format.js {
      render :update do |page|
        page.replace_html or some other reponse
      end
     }
  end
end


HTH,
Bill

Thank you for reply.
It really helped!

Thanks again :)

On 7월27일, 오전4시05분, bill walton <bwalton...@gmail.com>
wrote:
> Hi serenobs,
>
> On Sun, 2009-07-26 at 11:35 -0700, serenobs wrote:
> > Hi.
>
> > I used radio_button_tag.
> > and I want to pass the value of selected radio button to controller.
>
> > <%= radio_button_tag ''exp'', 1 %>
> > <%= radio_button_tag ''exp'', 2 %>
>
> > <%= link_to :action=>"do" %>
> > can i pass the radio button''s value to above method as a
parameter?
>
> You can using link_to_remote, which generates an Ajax request.
>
> <div id="radio_buttons">
>   <%= radio_button_tag ''exp'', 1 %>
>   <%= radio_button_tag ''exp'', 2 %>
> </div>
>
> <%= link_to_remote ''Submit now'', :url =>
{:action=>"do"}, :submit => ''radio_buttons''
%>
>
> The selected radio button''s value will be accessable in your
controller
> method via the name you''ve given your radio buttons.  So in this
case,
> the ''do'' method in your controller would probably look
something like:
>
> def do
>
>   if params[:exp] = ''1''   #remember that params come back
as strings
>     do_something
>   elsif params[:exp] = ''2''
>     do_something_else
>   else
>     handle_the_no_default_radio_button_case  # if you want one to be
checked, supply true as the third parameter
>   end
>
>   respond_to do |format|
>     format.js {
>       render :update do |page|
>         page.replace_html or some other reponse
>       end
>      }
>   end
> end
>
> HTH,
> Bill

On Sun, 2009-07-26 at 13:06 -0700, serenobs wrote:
> Thank you for reply.
> It really helped!
> 
> Thanks again :)
You''re welcome.

Best regards,
Bill

ah, one more question.
if there are 2 radio button groups, then how can I handle these
things?

:submit => ''group1'', ''group2'' may be not
working..


On 7월27일, 오전6시00분, bill walton <bwalton...@gmail.com>
wrote:
> On Sun, 2009-07-26 at 13:06 -0700, serenobs wrote:
> > Thank you for reply.
> > It really helped!
>
> > Thanks again :)
>
> You''re welcome.
>
> Best regards,
> Bill

On Sun, 2009-07-26 at 14:27 -0700, serenobs wrote:
> ah, one more question.
> if there are 2 radio button groups, then how can I handle these
> things?
> 
> :submit => ''group1'', ''group2'' may be
not working..
> 
put them both inside one <div id="whatever">...</div> and
:submit =>
''whatever''.  Assuming you name them group1 and group2,
you''ll access via
params[:group1] and params[:group2]