? Buttonless?

I have this code, which is working quite well:

<% form_tag ‘’, :method => ‘GET’ do %>

<%= radio_button_tag :report, 'by_date', params[ :report ] ||= 'by_date' %>By Date

<%= radio_button_tag :report, 'by_donor', params[ :report ] == 'by_donor' %>By Donor

<%= submit_tag "Choose" %>

<% end %>

<%= render( :partial => “orders” , :object => @orders ) %>
(Inside of the _orders partial is where params[ :report ] is
processed)

But it’s ugly in that pressing “Choose” is redundant–I want the
partial action to happen when the user simply selects the radio
button. Is there any way to do this?

Many TIA,
Craig

Dudebot wrote:

I have this code, which is working quite well:

<% form_tag ‘’, :method => ‘GET’ do %>

<%= radio_button_tag :report, 'by_date', params[ :report ] ||= 'by_date' %>By Date

<%= radio_button_tag :report, 'by_donor', params[ :report ] == 'by_donor' %>By Donor

<%= submit_tag "Choose" %>

<% end %>

<%= render( :partial => “orders” , :object => @orders ) %>
(Inside of the _orders partial is where params[ :report ] is
processed)

But it’s ugly in that pressing “Choose” is redundant–I want the
partial action to happen when the user simply selects the radio
button. Is there any way to do this?

Sure. There’s no need for a form here as far as I can see – just use
links for the two options.

Many TIA,
Craig

Best,

Marnen Laibow-Koser
http://www.marnen.org
[email protected]

Hi Craig,

On Mon, 2009-09-21 at 19:56 -0700, Dudebot wrote:

<%= render( :partial => “orders” , :object => @orders ) %>
(Inside of the _orders partial is where params[ :report ] is
processed)

But it’s ugly in that pressing “Choose” is redundant–I want the
partial action to happen when the user simply selects the radio
button. Is there any way to do this?

Assuming you’re OK with an Ajax request, check out the docs for
observe_form.

Best regards,
Bill

Or look up:
http://railsbrain.com/api/rails-2.3.2/doc/index.html?a=M002477&name=observe_form
http://railsbrain.com/api/rails-2.3.2/doc/index.html?a=M002476&name=observe_field

Dudebot wrote:

I have this code, which is working quite well:

<% form_tag ‘’, :method => ‘GET’ do %>

<%= radio_button_tag :report, 'by_date', params[ :report ] ||= 'by_date' %>By Date

<%= radio_button_tag :report, 'by_donor', params[ :report ] == 'by_donor' %>By Donor

<%= submit_tag "Choose" %>

<% end %>

<%= render( :partial => “orders” , :object => @orders ) %>
(Inside of the _orders partial is where params[ :report ] is
processed)

But it’s ugly in that pressing “Choose” is redundant–I want the
partial action to happen when the user simply selects the radio
button. Is there any way to do this?

Many TIA,
Craig

The Radio button helper also has an onclick option so you can remote
call a function when ever they click the button, or execute some
javaScript. I have done this many times in my apps, for exmaple with
gender:

<% func1 = remote_function( :update => ‘’, :url => {
:action => ‘gender_female’, :id => @user.id},
:with => “‘select=’ + escape(value)” ) %>
<% func2 = remote_function( :update => ‘’, :url => {
:action => ‘gender_male’, :id=> @user.id},
:with => “‘select=’ + escape(value)” ) %>
Male:
<%= radio_button_tag( :gender, :male,
@user.gender.to_s == “Male” ? true : false,
:onclick => func2 )%>

Female:
<%= radio_button_tag( :gender, :female,
@user.gender.to_s == “Female” ? true : false,
:onclick => func1 )%>

Thanks, Bill! The docs for observe_form are sparse:

"Observes the form with the DOM ID specified by form_id and calls a
callback when its contents have changed. The default callback is an
Ajax call. By default all fields of the observed field are sent as
parameters with the Ajax call.

The options for observe_form are the same as the options for
observe_field. The JavaScript variable value available to the :with
option is set to the serialized form by default."

observe_field seems quite different… I’ve looked up various
references on the web and played around without success. How would I
use “observe_form” with my code? I get the feeling the answer is
simple, and I’m just missing it…

Many TIA,
Craig

This for example does not work: (index.html.erb)

<% form_tag ‘’, { :id => ‘myform’, :method => :get } do %>

<%= radio_button_tag :report, 'by_date', params[ :report ] ||= 'by_date' %>By Date

<%= radio_button_tag :report, 'by_donor', params[ :report ] == 'by_donor' %>By Donor

<%= submit_tag "Choose" %>

<% end %>

<%= observe_form( ‘myform’,
:frequency => 1,
:with => “report”,
:action => :index ) %>

<%= render( :partial => “reports” ) %>

Any ideas?
Again, many TIA,
Craig

Hi Craig,

On Mon, 2009-09-21 at 20:57 -0700, Dudebot wrote:

This for example does not work: (index.html.erb)

What, exactly, do you mean ‘does not work’? Is the Ajax request not
firing? Are there no params? If there are params, are they not named
what you expect?

If you’re going to use/debug Ajax, you need to be using Firefox and the
Firebug plugin. You will be able to see all requests, params, and
responses in the Firebug NET tab, and all Ajax requests, etc. in the
Console tab.

To help further, I’ll need to know what you’re seeing.

Best regards,
Bill

This gives you an ajax response.
<%= radio_button_tag :report, ‘by_date’, params[ :report ] ||=
‘by_date’, :onclick => remote_function( :url=> { :controller =>
‘myforms’, :action => ‘do’ } ) %>

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