125 lines
3.4 KiB
Ruby
125 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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# == Subscribable concern
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#
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# Users can subscribe to these models.
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#
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# Used by Issue, MergeRequest, Label
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#
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module Subscribable
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extend ActiveSupport::Concern
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included do
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has_many :subscriptions, dependent: :destroy, as: :subscribable # rubocop:disable Cop/ActiveRecordDependent
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end
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def subscribed?(user, project = nil)
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return false unless user
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if (subscription = lazy_subscription(user, project)&.itself)
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subscription.subscribed
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else
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subscribed_without_subscriptions?(user, project)
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end
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end
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def lazy_subscription(user, project = nil)
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return unless user
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# handle project and group labels as well as issuable subscriptions
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subscribable_type = self.class.ancestors.include?(Label) ? 'Label' : self.class.name
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BatchLoader.for(id: id, subscribable_type: subscribable_type, project_id: project&.id).batch do |items, loader|
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values = items.each_with_object({ ids: Set.new, subscribable_types: Set.new, project_ids: Set.new }) do |item, result|
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result[:ids] << item[:id]
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result[:subscribable_types] << item[:subscribable_type]
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result[:project_ids] << item[:project_id]
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end
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subscriptions = Subscription.where(subscribable_id: values[:ids], subscribable_type: values[:subscribable_types], project_id: values[:project_ids], user: user)
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subscriptions.each do |subscription|
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loader.call({
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id: subscription.subscribable_id,
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subscribable_type: subscription.subscribable_type,
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project_id: subscription.project_id
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}, subscription)
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end
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end
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end
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# Override this method to define custom logic to consider a subscribable as
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# subscribed without an explicit subscription record.
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def subscribed_without_subscriptions?(user, project)
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false
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end
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def subscribers(project)
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relation = subscriptions_available(project)
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.where(subscribed: true)
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.select(:user_id)
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User.where(id: relation)
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end
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def toggle_subscription(user, project = nil)
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unsubscribe_from_other_levels(user, project)
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new_value = !subscribed?(user, project)
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find_or_initialize_subscription(user, project)
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.update(subscribed: new_value)
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end
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def subscribe(user, project = nil)
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unsubscribe_from_other_levels(user, project)
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find_or_initialize_subscription(user, project)
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.update(subscribed: true)
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end
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def unsubscribe(user, project = nil)
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unsubscribe_from_other_levels(user, project)
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find_or_initialize_subscription(user, project)
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.update(subscribed: false)
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end
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def set_subscription(user, desired_state, project = nil)
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if desired_state
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subscribe(user, project)
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else
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unsubscribe(user, project)
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end
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end
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private
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def unsubscribe_from_other_levels(user, project)
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other_subscriptions = subscriptions.where(user: user)
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other_subscriptions =
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if project.blank?
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other_subscriptions.where.not(project: nil)
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else
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other_subscriptions.where(project: nil)
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end
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other_subscriptions.update_all(subscribed: false)
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end
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def find_or_initialize_subscription(user, project)
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BatchLoader::Executor.clear_current
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subscriptions
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.find_or_initialize_by(user_id: user.id, project_id: project.try(:id))
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end
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def subscriptions_available(project)
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t = Subscription.arel_table
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subscriptions
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.where(t[:project_id].eq(nil).or(t[:project_id].eq(project.try(:id))))
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end
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end
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