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# == Subscribable concern
#
# Users can subscribe to these models.
#
# Used by Issue, MergeRequest, Label
#
module Subscribable
extend ActiveSupport::Concern
included do
has_many :subscriptions, dependent: :destroy, as: :subscribable
end
def subscribed?(user)
if subscription = subscriptions.find_by_user_id(user.id)
subscription.subscribed
else
subscribed_without_subscriptions?(user)
end
end
# Override this method to define custom logic to consider a subscribable as
# subscribed without an explicit subscription record.
def subscribed_without_subscriptions?(user)
false
end
def subscribers
subscriptions.where(subscribed: true).map(&:user)
end
def toggle_subscription(user)
subscriptions.
find_or_initialize_by(user_id: user.id).
update(subscribed: !subscribed?(user))
end
def subscribe(user)
subscriptions.
find_or_initialize_by(user_id: user.id).
update(subscribed: true)
end
def unsubscribe(user)
subscriptions.
find_or_initialize_by(user_id: user.id).
update(subscribed: false)
end
end
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