Rails - Mar 2009 - Compare changes.

How can I compare an entry?

@edit = Data.find(4)

After this, user update some data en press submit.

How can compare, is there any changes in new @edit and what is in
database?
Have user chnged any data or pressed just submit without changes?
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
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 12 Mar., 18:13, Fresh Mix
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> How can compare, is there any changes in new @edit and what is in
> database?
> Have user chnged any data or pressed just submit without changes?
Try this in the #update action. It''s untested:

@edited_data = Data.new(params[:data])
@original_data = Data.find(params[:id])
if @edited_data == @original_data
  # The data is NOT changed...
else
  # The data IS changed...
end

I don''t know if the == operator works in this case, but try it out and
come back if you get problems. :)

--
Cheers,
David Knorr
http://twitter.com/rubyguy
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---