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15 lines
632 B
Ruby
15 lines
632 B
Ruby
class UniquenessMultiValidator < ActiveModel::EachValidator
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def validate_each(record, attribute, value)
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validated = []
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list = value.reject(&:marked_for_destruction?)
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list.each do |x|
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next if x.send(options[:attribute]).blank?
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existing = list.select { |y| x.send(options[:attribute]) == y.send(options[:attribute]) }
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next unless existing.length > 1
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validated << x.send(options[:attribute])
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association = options[:association] || attribute
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record.errors.add(association, :invalid) if record.errors[association].blank?
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x.errors.add(options[:attribute], :taken)
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end
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end
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end
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