11 lines
462 B
Ruby
11 lines
462 B
Ruby
class UserNameValidator < ActiveModel::EachValidator
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def validate_each(rec, attr, value)
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name = value
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rec.errors[attr] << "already exists" if User.find_by_name(name).present?
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rec.errors[attr] << "must be 2 to 100 characters long" if !name.length.between?(2, 100)
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rec.errors[attr] << "cannot have whitespace or colons" if name =~ /[[:space:]]|:/
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rec.errors[attr] << "cannot begin or end with an underscore" if name =~ /\A_|_\z/
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end
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end
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