mastodon/app/models/notification_group.rb

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# frozen_string_literal: true
class NotificationGroup < ActiveModelSerializers::Model
attributes :group_key, :sample_accounts, :notifications_count, :notification, :most_recent_notification_id
def self.from_notification(notification, max_id: nil)
if notification.group_key.present?
# TODO: caching and preloading
scope = notification.account.notifications.where(group_key: notification.group_key)
scope = scope.where(id: ..max_id) if max_id.present?
most_recent_notifications = scope.order(id: :desc).take(3)
most_recent_id = most_recent_notifications.first.id
sample_accounts = most_recent_notifications.map(&:from_account)
notifications_count = scope.count
else
most_recent_id = notification.id
sample_accounts = [notification.from_account]
notifications_count = 1
end
NotificationGroup.new(
notification: notification,
group_key: notification.group_key || "ungrouped-#{notification.id}",
sample_accounts: sample_accounts,
notifications_count: notifications_count,
most_recent_notification_id: most_recent_id
)
end
delegate :type,
:target_status,
:report,
:account_relationship_severance_event,
:account_warning,
to: :notification, prefix: false
end