22 lines
692 B
Ruby
22 lines
692 B
Ruby
# frozen_string_literal: true
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# ArrayMembersValidator
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#
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# Custom validator that checks if validated
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# attribute contains non empty array, which every
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# element is an instances of :member_class
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#
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# Example:
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#
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# class Config::Root < ActiveRecord::Base
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# validates :nodes, member_class: Config::Node
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# end
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#
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class ArrayMembersValidator < ActiveModel::EachValidator
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def validate_each(record, attribute, value)
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if !value.is_a?(Array) || value.empty? || value.any? { |child| !child.instance_of?(options[:member_class]) }
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record.errors.add(attribute, _("should be an array of %{object_name} objects") % { object_name: options.fetch(:object_name, attribute) })
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end
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end
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end
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