Rails - Sep 2008 - Can you use observe_field to watch a select list and then update the contents of a text field?

Before I waste more time trying to figure that out, I was wondering if
it''s even possible? The Rails Way says that observe_field by default
will trigger changes in text fields and text areas, and on clicks for
radio buttons and check boxes. So perhaps I''m using the wrong tool
here? Thanks.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On 4 Sep 2008, at 13:36, Sharon Machlis wrote:
>
> Before I waste more time trying to figure that out, I was wondering if
> it''s even possible? The Rails Way says that observe_field by
default
> will trigger changes in text fields and text areas, and on clicks for
> radio buttons and check boxes. So perhaps I''m using the wrong tool
> here? Thanks.
should do, but i''d just use an onChange handler.

Fred
>
> >

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

So it''s easy enough to pop some :onchange JavaScript code inline for a
collection_select drop-down list. That code adds value of what''s
selected to a couple of other text fields:

<label for="venue_id">Place*:</label>
<%collection_select(:event, :venue_id, @venues_all, :id, :name, {:prompt
=> "  Please select a location"}, {:onchange => "var id =
this.value;
document.forms[0].elements[2].value=(id);document.forms[0].elements[3].value=document.forms[0].elements[5].value"})
%>

But I don''t want the venue value (id number) in the text fields; I
want venue.phone and venue.url in those fields. After numerous hours
the past few days, I still don''t understand how I can mix JavaScript
and Ruby so I can access the venue.phone and venue.url values and have
them update my form''s other text fields. Any advice appreciated.



On Sep 4, 7:49 am, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On 4 Sep 2008, at 13:36,SharonMachliswrote:
>
>
>
> > Before I waste more time trying to figure that out, I was wondering if
> > it''s even possible? The Rails Way says that observe_field by
default
> > will trigger changes in text fields and text areas, and on clicks for
> > radio buttons and check boxes. So perhaps I''m using the wrong
tool
> > here? Thanks.
>
> should do, but i''d just use an onChange handler.
>
> Fred
>
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On Sep 7, 5:37 am, Sharon Machlis
<smach...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> So it''s easy enough to pop some :onchange JavaScript code inline
for a
> collection_select drop-down list. That code adds value of what''s
> selected to a couple of other text fields:
>
> <label for="venue_id">Place*:</label> <%>
collection_select(:event, :venue_id, @venues_all, :id, :name, {:prompt
> => "  Please select a location"}, {:onchange => "var
id = this.value;
> document.forms[0].elements[2].value=(id);document.forms[0].elements[3].valu
e=document.forms[0].elements[5].value"})
> %>
>
> But I don''t want the venue value (id number) in the text fields; I
> want venue.phone and venue.url in those fields. After numerous hours
> the past few days, I still don''t understand how I can mix
JavaScript
> and Ruby so I can access the venue.phone and venue.url values and have
> them update my form''s other text fields. Any advice appreciated.
One way would be to make an ajax call from the on change handler. The
remote_function helper is good for this. Something like
remote_function( :url => {...}, :with =>
"''id=''+this.value")

Should submit the selected id to the specified action. You can then
you some rjs to update the appropriate form elements.

Fred
>
> On Sep 4, 7:49 am, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
> > On 4 Sep 2008, at 13:36,SharonMachliswrote:
>
> > > Before I waste more time trying to figure that out, I was
wondering if
> > > it''s even possible? The Rails Way says that
observe_field by default
> > > will trigger changes in text fields and text areas, and on clicks
for
> > > radio buttons and check boxes. So perhaps I''m using the
wrong tool
> > > here? Thanks.
>
> > should do, but i''d just use an onChange handler.
>
> > Fred
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---