Forum: Ruby on Rails Validating the uniqueness of the combination of two fields

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macarthy (Guest)
on 2007-02-20 21:21
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Is there a built-in method to validate that two fields in combination
are unique?

e.g. if my table is :

username  | password
user1        | pass1

the following happens>"user1",password=>"pass2")  => ok>"user2",password=>"pass1")  => ok>"user1",password=>"pass1")  => not ok

Kim (Guest)
on 2007-02-21 02:56
(Received via mailing list)
I am interested in this too.  Does anybody have any ideas?
bandito (Guest)
on 2007-02-21 03:14
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validates_uniqueness_of :username, :scope => :password

(this is an extra query. You could write a unique index and rescue the
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