Rails - May 2006 - Doing and storing a Writeboard like diff in RoR

Hello all,

Anyone have any suggestions on how I could do and display a diffed piece of
text in a style similar to Writeboard (strikeouts etc.)

Q1) Are there any ruby gems for diff?
Q2) How would I represent the diffed text in styled HTML?

If there are existing tools, any ideas on how I could write this?

Thanks,
Vaishal
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Hi,

2006/5/19, Vaishal Sheth <vpsheth@gmail.com>:
> Anyone have any suggestions on how I could do and display a diffed piece of
> text in a style similar to Writeboard (strikeouts etc.)
>
> Q1) Are there any ruby gems for diff?
> Q2) How would I represent the diffed text in styled HTML?
There was a mail here on 3.10.05 from Joe Clarke, I quote it below:

--------------------------------------------------------------------------------------------------------------
Just copy the library from here:
http://dev.instiki.org/file/instiki/trunk/lib/diff.rb.

Save it under your railsdir/lib as diff.rb
In your environment.rb add
require ''diff''

To use the method in the controller do something like this:
@diff_results = HTMLDiff.diff(@object1.text_to_compare,
@object2.text_to_compare)

in your view do something like this:
<%= @diff_results %>

If you want to change the look of the results, add this to your stylesheet:

del.diffmod {
 color: #999;
 background-color: #efefef;
}

ins.diffmod {
 background-color: #cfc;
 text-decoration: none;
 color: #000;
}

--------------------------------------------------------------------------------------------------------------

HTH,
Beate

diff.rb URL has changed.

http://viewvc.rubyforge.mmmultiworks.com/cgi/viewvc.cgi/instiki/trunk/lib/diff.rb?root=instiki&view=log


just posted this so that I can bookmark this page with correct 
information in it :)
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