How to compare 2 string object and display the differences

Hello, what is the best choice to compare 2 string/text in Ruby ? For
example i have 2 model that each of it have a “content” column, the
question is i like to compare the content of the model and display the
differences in a HTML view with yellow highlighting.

R there any plugin that can solve this problem ?
Do I need to use Regex to solve it ? cos i’m a newbie bout regex.
I found an article
that try to solve the problem using “diff” but apparently it needs a
file processing, so r there a way to do it without involving any
files ?


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