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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 6da24aad4c.
* 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.
54 lines
2 KiB
Ruby
54 lines
2 KiB
Ruby
# frozen_string_literal: true
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module CacheConcern
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extend ActiveSupport::Concern
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def render_with_cache(**options)
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raise ArgumentError, 'only JSON render calls are supported' unless options.key?(:json) || block_given?
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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(':')
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expires_in = options.delete(:expires_in) || 3.minutes
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body = Rails.cache.read(key, raw: true)
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if body
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render(options.except(:json, :serializer, :each_serializer, :adapter, :fields).merge(json: body))
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else
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if block_given?
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options[:json] = yield
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elsif options[:json].is_a?(Symbol)
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options[:json] = send(options[:json])
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end
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render(options)
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Rails.cache.write(key, response.body, expires_in: expires_in, raw: true)
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end
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end
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def set_cache_headers
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response.headers['Vary'] = public_fetch_mode? ? 'Accept' : 'Accept, Signature'
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end
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def cache_collection(raw, klass)
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return raw unless klass.respond_to?(:with_includes)
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raw = raw.cache_ids.to_a if raw.is_a?(ActiveRecord::Relation)
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cached_keys_with_value = Rails.cache.read_multi(*raw).transform_keys(&:id)
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uncached_ids = raw.map(&:id) - cached_keys_with_value.keys
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klass.reload_stale_associations!(cached_keys_with_value.values) if klass.respond_to?(:reload_stale_associations!)
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unless uncached_ids.empty?
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uncached = klass.where(id: uncached_ids).with_includes.each_with_object({}) { |item, h| h[item.id] = item }
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uncached.each_value do |item|
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Rails.cache.write(item, item)
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end
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end
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raw.map { |item| cached_keys_with_value[item.id] || uncached[item.id] }.compact
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end
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def cache_collection_paginated_by_id(raw, klass, limit, options)
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cache_collection raw.cache_ids.paginate_by_id(limit, options), klass
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end
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end
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