20 lines
961 B
Ruby
20 lines
961 B
Ruby
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class ColorValidator < ActiveModel::EachValidator
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REGEXP = {
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RGB: /^rgb\((((((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]),\s?)){2}|((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5])\s)){2})((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]))|((((([1-9]?\d(\.\d+)?)|100|(\.\d+))%,\s?){2}|((([1-9]?\d(\.\d+)?)|100|(\.\d+))%\s){2})(([1-9]?\d(\.\d+)?)|100|(\.\d+))%))\)$/i,
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HSL: /^hsl\(((((([12]?[1-9]?\d)|[12]0\d|(3[0-6]\d))(\.\d+)?)|(\.\d+))(deg)?|(0|0?\.\d+)turn|(([0-6](\.\d+)?)|(\.\d+))rad)((,\s?(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2}|(\s(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2})\)$/i,
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HEX: /^#([\da-f]{3}){1,2}$/i
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}.freeze
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def validate_each(record, attribute, value)
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return if color?(value)
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record.errors[attribute] << (options[:message] || 'is not a color. Only Hex, RGB and HSL colors are supported.')
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end
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def color?(value)
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sanitized_value = value.to_s.strip.gsub(', ', ',')
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REGEXP.values.any? { |regexp| regexp.match? sanitized_value }
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end
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end
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