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#2653 ✓committed
Jacob Burkhart

validates_uniqueness_of unicode aware field length

Reported by Jacob Burkhart | May 15th, 2009 @ 06:27 PM | in 2.3.4

If I have a validates_uniqueness_of column with limit 50 and set it to:


rails incorrectly runs a check for anything existing where that column equals


The problem is in validates_uniqueness_of string concatenation (implemented in #1042)

value = column.limit ? value.to_s[0, column.limit] : value.to_s

should be changed to

value = column.limit ? value.to_s.mb_chars[0, column.limit].to_s : value.to_s

NOTE: also to reproduce you must have set encoding: utf8 in database.yml, and your database table must be "convert to character set utf8"

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