forked from fedi/mastodon
64ef37b89d
* 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.
55 lines
2 KiB
Ruby
55 lines
2 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module CacheConcern
|
|
extend ActiveSupport::Concern
|
|
|
|
def render_with_cache(**options)
|
|
raise ArgumentError, 'only JSON render calls are supported' unless options.key?(:json) || block_given?
|
|
|
|
key = options.delete(:key) || [[params[:controller], params[:action]].join('/'), options[:json].respond_to?(:cache_key) ? options[:json].cache_key : nil, options[:fields].nil? ? nil : options[:fields].join(',')].compact.join(':')
|
|
expires_in = options.delete(:expires_in) || 3.minutes
|
|
body = Rails.cache.read(key, raw: true)
|
|
|
|
if body
|
|
render(options.except(:json, :serializer, :each_serializer, :adapter, :fields).merge(json: body))
|
|
else
|
|
if block_given?
|
|
options[:json] = yield
|
|
elsif options[:json].is_a?(Symbol)
|
|
options[:json] = send(options[:json])
|
|
end
|
|
|
|
render(options)
|
|
Rails.cache.write(key, response.body, expires_in: expires_in, raw: true)
|
|
end
|
|
end
|
|
|
|
def set_cache_headers
|
|
response.headers['Vary'] = public_fetch_mode? ? 'Accept' : 'Accept, Signature'
|
|
end
|
|
|
|
def cache_collection(raw, klass)
|
|
return raw unless klass.respond_to?(:with_includes)
|
|
|
|
raw = raw.cache_ids.to_a if raw.is_a?(ActiveRecord::Relation)
|
|
cached_keys_with_value = Rails.cache.read_multi(*raw).transform_keys(&:id)
|
|
uncached_ids = raw.map(&:id) - cached_keys_with_value.keys
|
|
|
|
klass.reload_stale_associations!(cached_keys_with_value.values) if klass.respond_to?(:reload_stale_associations!)
|
|
|
|
unless uncached_ids.empty?
|
|
uncached = klass.where(id: uncached_ids).with_includes.each_with_object({}) { |item, h| h[item.id] = item }
|
|
|
|
uncached.each_value do |item|
|
|
Rails.cache.write(item, item)
|
|
end
|
|
end
|
|
|
|
raw.map { |item| cached_keys_with_value[item.id] || uncached[item.id] }.compact
|
|
end
|
|
|
|
def cache_collection_paginated_by_id(raw, klass, limit, options)
|
|
cache_collection raw.cache_ids.paginate_by_id(limit, options), klass
|
|
end
|
|
end
|