http://www.brianmcquay.com/rails-threading-with-spawn-plugin/174 My Ruby on Rails experience, web development tips including SEO, and contributions to open source projects Tue, 24 Jan 2012 13:58:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.brianmcquay.com/rails-threading-with-spawn-plugin/174/comment-page-1#comment-3825 David Wed, 30 Jun 2010 07:17:04 +0000 http://www.brianmcquay.com/?p=174#comment-3825 Validates uniqueness of only guarantees uniqueness at the time AR runs the uniqueness check. If you have two identical records being saved at the same time, they can each "validate their uniqueness" before either record is saved. The way around this is to put a uniqueness constraint in the database. Validates uniqueness of only guarantees uniqueness at the time AR runs the uniqueness check. If you have two identical records being saved at the same time, they can each “validate their uniqueness” before either record is saved. The way around this is to put a uniqueness constraint in the database.

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