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由 David Heinemeier Hansson 提交于
Added Errors#add_on_blank which works like Errors#add_on_empty, but uses Object#blank? instead. CHANGED: validates_presence_of now uses Errors#add_on_blank, which will make " " fail the validation where it didnt before #1309. Added that " " is now also blank? (using strip if available) git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1346 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
a1e9ceeb
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