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mastodon
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mastodon/app/models/notification.rb

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# frozen_string_literal: true
# == Schema Information
#
# Table name: notifications
#
# id :integer not null, primary key
# account_id :integer
# activity_id :integer
# activity_type :string
# created_at :datetime not null
# updated_at :datetime not null
# from_account_id :integer
#
class Notification < ApplicationRecord
include Paginable
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include Cacheable
TYPE_CLASS_MAP = {
mention: 'Mention',
reblog: 'Status',
follow: 'Follow',
follow_request: 'FollowRequest',
favourite: 'Favourite',
}.freeze
STATUS_INCLUDES = [:account, :stream_entry, :media_attachments, :tags, mentions: :account, reblog: [:stream_entry, :account, :media_attachments, :tags, mentions: :account]].freeze
belongs_to :account
belongs_to :from_account, class_name: 'Account'
belongs_to :activity, polymorphic: true
belongs_to :mention, foreign_type: 'Mention', foreign_key: 'activity_id'
belongs_to :status, foreign_type: 'Status', foreign_key: 'activity_id'
belongs_to :follow, foreign_type: 'Follow', foreign_key: 'activity_id'
belongs_to :follow_request, foreign_type: 'FollowRequest', foreign_key: 'activity_id'
belongs_to :favourite, foreign_type: 'Favourite', foreign_key: 'activity_id'
validates :account_id, uniqueness: { scope: [:activity_type, :activity_id] }
validates :activity_type, inclusion: { in: TYPE_CLASS_MAP.values }
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scope :cache_ids, -> { select(:id, :updated_at, :activity_type, :activity_id) }
scope :browserable, ->(exclude_types = []) {
types = TYPE_CLASS_MAP.values - activity_types_from_types(exclude_types + [:follow_request])
where(activity_type: types)
}
cache_associated :from_account, status: STATUS_INCLUDES, mention: [status: STATUS_INCLUDES], favourite: [:account, status: STATUS_INCLUDES], follow: :account
def type
@type ||= TYPE_CLASS_MAP.invert[activity_type].to_sym
end
def target_status
case type
when :reblog
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activity&.reblog
when :favourite, :mention
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activity&.status
end
end
def browserable?
type != :follow_request
end
class << self
def reload_stale_associations!(cached_items)
account_ids = cached_items.map(&:from_account_id).uniq
accounts = Account.where(id: account_ids).map { |a| [a.id, a] }.to_h
cached_items.each do |item|
item.from_account = accounts[item.from_account_id]
end
end
private
def activity_types_from_types(types)
types.map { |type| TYPE_CLASS_MAP[type.to_sym] }.compact
end
end
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after_initialize :set_from_account
before_validation :set_from_account
private
def set_from_account
return unless new_record?
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case activity_type
when 'Status', 'Follow', 'Favourite', 'FollowRequest'
self.from_account_id = activity&.account_id
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when 'Mention'
self.from_account_id = activity&.status&.account_id
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end
end
end