mastodon/app/controllers/api/v1/favourites_controller.rb
Akihiko Odaki ae871c4d46
Make Array-creation behavior of Paginable more predictable (#14687)
* Make Array-creation behavior of Paginable more predictable

Paginable.paginate_by_id usually returns ActiveRecord::Relation, but it
returns an Array if min_id option is present. The behavior caused problems
fixed with the following commits:
- 552e886b64
- b63ede5005
- 64ef37b89d

To prevent from recurring similar problems, this commit introduces two
changes:
- The scope now always returns an Array whether min_id option is present
  or not.
- The scope is renamed to to_a_paginated_by_id to clarify it returns an
  Array.

* Transform Paginable.to_a_paginated_by_id from a scope to a class method

https://api.rubyonrails.org/classes/ActiveRecord/Scoping/Named/ClassMethods.html#method-i-scope
> The method is intended to return an ActiveRecord::Relation object, which
> is composable with other scopes.

Paginable.to_a_paginated_by_id returns an Array and is not appropriate
as a scope.
2020-08-31 12:47:09 +02:00

65 lines
1.5 KiB
Ruby

# frozen_string_literal: true
class Api::V1::FavouritesController < Api::BaseController
before_action -> { doorkeeper_authorize! :read, :'read:favourites' }
before_action :require_user!
after_action :insert_pagination_headers
def index
@statuses = load_statuses
render json: @statuses, each_serializer: REST::StatusSerializer, relationships: StatusRelationshipsPresenter.new(@statuses, current_user&.account_id)
end
private
def load_statuses
cached_favourites
end
def cached_favourites
cache_collection(results.map(&:status), Status)
end
def results
@_results ||= account_favourites.eager_load(:status).to_a_paginated_by_id(
limit_param(DEFAULT_STATUSES_LIMIT),
params_slice(:max_id, :since_id, :min_id)
)
end
def account_favourites
current_account.favourites
end
def insert_pagination_headers
set_pagination_headers(next_path, prev_path)
end
def next_path
if records_continue?
api_v1_favourites_url pagination_params(max_id: pagination_max_id)
end
end
def prev_path
unless results.empty?
api_v1_favourites_url pagination_params(min_id: pagination_since_id)
end
end
def pagination_max_id
results.last.id
end
def pagination_since_id
results.first.id
end
def records_continue?
results.size == limit_param(DEFAULT_STATUSES_LIMIT)
end
def pagination_params(core_params)
params.slice(:limit).permit(:limit).merge(core_params)
end
end