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# frozen_string_literal: true
# ColorValidator
#
# Custom validator for web color codes. It requires the leading hash symbol and
# will accept RGB triplet or hexadecimal formats.
#
# Example:
#
# class User < ActiveRecord::Base
# validates :background_color, allow_blank: true, color: true
# end
#
class ColorValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
case value
when NilClass then return
when ::Gitlab::Color then return if value.valid?
when ::String then return if ::Gitlab::Color.new(value).valid?
end
record.errors.add(attribute, "must be a valid color code")
end
end
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