43 lines
902 B
Ruby
43 lines
902 B
Ruby
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module Participable
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extend ActiveSupport::Concern
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module ClassMethods
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def participant(*attrs)
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participant_attrs.concat(attrs.map(&:to_s))
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end
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def participant_attrs
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@participant_attrs ||= []
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end
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end
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def participants(current_user = self.author)
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self.class.participant_attrs.flat_map do |attr|
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meth = method(attr)
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value =
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if meth.arity == 1
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meth.call(current_user)
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else
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meth.call
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end
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participants_for(value, current_user)
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end.compact.uniq
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end
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private
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def participants_for(value, current_user = nil)
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case value
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when User
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[value]
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when Array
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value.flat_map { |v| participants_for(v, current_user) }
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when Participable
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value.participants(current_user)
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when Mentionable
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value.mentioned_users(current_user)
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end
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end
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end
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