hometown/app/controllers/api/v1/notifications_controller.rb
Akihiko Odaki 64ef37b89d
Introduce ApplicationController#cache_collection_paginated_by_id (#14677)
* Replace incorrect use of distinct with group

Some uses of ActiveRecord::QueryMethods#distinct pass field names but they
are incorrect for the current version of Rails.

ActiveRecord::QueryMethods#group provides the expected behavior and
benefits performance. See commit 6da24aad4cafdef8d8a2c92bac2002a5fc2fe9c8.

* Introduce ApplicationController#cache_collection_paginated_by_id

ApplicationController#cache_collection_paginated_by_id fuses
ApplicationController#cache_collection and Paginable.paginate_by_id.

An advantage of this method is that it prevents from modifying scope which
Paginable.paginate_by_id may provide.
ApplicationController#cache_collection always return an array and there
is no possibility of the scope modification. It is also clear for a
programmer, considering the implication of "cache".

This method can also emit more efficient queries by using
Cacheable.cache_ids before calling Paginable.paginate_by_id.
2020-08-28 12:31:56 +02:00

88 lines
2.3 KiB
Ruby

# frozen_string_literal: true
class Api::V1::NotificationsController < Api::BaseController
before_action -> { doorkeeper_authorize! :read, :'read:notifications' }, except: [:clear, :dismiss]
before_action -> { doorkeeper_authorize! :write, :'write:notifications' }, only: [:clear, :dismiss]
before_action :require_user!
after_action :insert_pagination_headers, only: :index
DEFAULT_NOTIFICATIONS_LIMIT = 15
def index
@notifications = load_notifications
render json: @notifications, each_serializer: REST::NotificationSerializer, relationships: StatusRelationshipsPresenter.new(target_statuses_from_notifications, current_user&.account_id)
end
def show
@notification = current_account.notifications.find(params[:id])
render json: @notification, serializer: REST::NotificationSerializer
end
def clear
current_account.notifications.delete_all
render_empty
end
def dismiss
current_account.notifications.find_by!(id: params[:id]).destroy!
render_empty
end
private
def load_notifications
cache_collection_paginated_by_id(
browserable_account_notifications,
Notification,
limit_param(DEFAULT_NOTIFICATIONS_LIMIT),
params_slice(:max_id, :since_id, :min_id)
)
end
def browserable_account_notifications
current_account.notifications.browserable(exclude_types, from_account)
end
def target_statuses_from_notifications
@notifications.reject { |notification| notification.target_status.nil? }.map(&:target_status)
end
def insert_pagination_headers
set_pagination_headers(next_path, prev_path)
end
def next_path
unless @notifications.empty?
api_v1_notifications_url pagination_params(max_id: pagination_max_id)
end
end
def prev_path
unless @notifications.empty?
api_v1_notifications_url pagination_params(min_id: pagination_since_id)
end
end
def pagination_max_id
@notifications.last.id
end
def pagination_since_id
@notifications.first.id
end
def exclude_types
val = params.permit(exclude_types: [])[:exclude_types] || []
val = [val] unless val.is_a?(Enumerable)
val
end
def from_account
params[:account_id]
end
def pagination_params(core_params)
params.slice(:limit, :exclude_types).permit(:limit, exclude_types: []).merge(core_params)
end
end