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Asked: 2026-06-04T12:15:05+00:00

does someone know how to add Umlauts to a regular expression to validate the

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does someone know how to add Umlauts to a regular expression to validate the format for a text input with rails?

I tried this but it breaks rails completely:

validates :first_name, :presence => true, :allow_blank => false, :format => { :with => /\A[a-z A-ZäöüÄÖÜ]+\z/}
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1 Answer

  1. Editorial Team

    Try this:

    validates :first_name, :presence => true, :allow_blank => false, :format => { :with => /\A[[:alpha:]]+\z/}
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