David Heinemeier Hansson
35 lines
761 B
Ruby
35 lines
761 B
Ruby
module Card::Watchable
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extend ActiveSupport::Concern
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included do
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has_many :watches, dependent: :destroy
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has_many :watchers, -> { active.merge(Watch.watching) }, through: :watches, source: :user
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after_create :subscribe_creator
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end
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def watched_by?(user)
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watch_for(user)&.watching?
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end
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def watch_for(user)
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watches.find_by(user: user)
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end
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def watch_by(user)
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watches.where(user: user).first_or_create.update!(watching: true)
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end
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def unwatch_by(user)
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watches.where(user: user).first_or_create.update!(watching: false)
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end
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private
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def subscribe_creator
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# Avoid touching to not interfere with the abandon card detection system
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Card.no_touching do
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watch_by creator
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end
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end
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end
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