how to add unique to a table column in ruby on rails

Posted by ohana on Stack Overflow See other posts from Stack Overflow or by ohana
Published on 2010-05-13T20:19:03Z Indexed on 2010/05/13 20:24 UTC
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ruby-on-rails

hi, I have a table with some columns, now i need to modify one column to make it unique(no duplicate values), how can i do that in ruby on rails?

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how to add unique to a table column in ruby on rails - Developer IT

how to add unique to a table column in ruby on rails

ruby-on-rails

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