diaspora/lib/diaspora/shareable.rb
2017-09-17 19:29:15 +02:00

98 lines
3.3 KiB
Ruby

# frozen_string_literal: true
# Copyright (c) 2010, Diaspora Inc. This file is
# licensed under the Affero General Public License version 3 or later. See
# the COPYRIGHT file.
# the point of this object is to centralize the simmilarities of Photo and Post,
# as they used to be the same class
module Diaspora
module Shareable
def self.included(model)
model.instance_eval do
include Diaspora::Fields::Guid
include Diaspora::Fields::Author
has_many :aspect_visibilities, as: :shareable, validate: false, dependent: :delete_all
has_many :aspects, through: :aspect_visibilities
has_many :share_visibilities, as: :shareable, dependent: :delete_all
delegate :id, :name, :first_name, to: :author, prefix: true
# scopes
scope :with_visibility, -> {
joins("LEFT OUTER JOIN share_visibilities ON share_visibilities.shareable_id = #{table_name}.id AND "\
"share_visibilities.shareable_type = '#{base_class}'")
}
scope :with_aspects, -> {
joins("LEFT OUTER JOIN aspect_visibilities ON aspect_visibilities.shareable_id = #{table_name}.id AND "\
" aspect_visibilities.shareable_type = '#{base_class}'")
}
end
model.extend Diaspora::Shareable::QueryMethods
end
def receive(recipient_user_ids)
return if recipient_user_ids.empty? || public?
ShareVisibility.batch_import(recipient_user_ids, self)
end
# The list of people that should receive this Shareable.
#
# @return [Array<Person>] The list of subscribers to this shareable
def subscribers
user = author.owner
if public?
[*user.contact_people, author]
else
user.people_in_aspects(user.aspects_with_shareable(self.class, id))
end
end
# Remote pods which are known to be subscribed to the post. Must include all pods which received the post in the
# past.
#
# @return [Array<String>] The list of pods' URIs
def subscribed_pods_uris
Pod.find(subscribers.select(&:remote?).map(&:pod_id).uniq).map {|pod| pod.url_to("") }
end
module QueryMethods
def owned_or_visible_by_user(user)
with_visibility.where(
visible_by_user(user).or(arel_table[:public].eq(true)
.or(arel_table[:author_id].eq(user.person_id)))
).select("DISTINCT #{table_name}.*")
end
def from_person_visible_by_user(user, person)
return owned_by_user(user) if person == user.person
with_visibility.where(author_id: person.id).where(
visible_by_user(user).or(arel_table[:public].eq(true))
).select("DISTINCT #{table_name}.*")
end
def for_visible_shareable_sql(max_time, order, limit=15, types=Stream::Base::TYPES_OF_POST_IN_STREAM)
by_max_time(max_time, order).order(table_name + ".id DESC").where(type: types).limit(limit)
end
def by_max_time(max_time, order="created_at")
where("#{table_name}.#{order} < ?", max_time).order("#{table_name}.#{order} DESC")
end
def owned_by_user(user)
user.person.public_send(table_name)
end
private
def visible_by_user(user)
ShareVisibility.arel_table[:user_id].eq(user.id)
end
end
end
end