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@ -4,7 +4,7 @@ class Attachment < ApplicationRecord
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include Publishable
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include Lockable
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belongs_to :container, polymorphic: true, touch: true, optional: true
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belongs_to :container, polymorphic: true, optional: true
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belongs_to :author, class_name: "User", foreign_key: :author_id
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belongs_to :course, foreign_key: :container_id, optional: true
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has_many :attachment_group_settings, :dependent => :destroy
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