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Add (back) rails-level JSON caching (#11333)

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Eugen Rochko 2019-07-21 22:32:16 +02:00 • committed by GitHub
parent 59fd622adc
commit c669bb42ba
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10 changed files with 64 additions and 50 deletions
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38
app/controllers/application_controller.rb
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@ -10,6 +10,7 @@ class ApplicationController < ActionController::Base
include Localized
include UserTrackingConcern
include SessionTrackingConcern
include CacheConcern
helper_method :current_account
helper_method :current_session
@ -115,47 +116,10 @@ class ApplicationController < ActionController::Base
current_user.setting_theme
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 respond_with_error(code)
respond_to do |format|
format.any { head code }
format.html { render "errors/#{code}", layout: 'error', status: code }
end
end
def render_cached_json(cache_key, **options)
options[:expires_in] ||= 3.minutes
cache_public = options.key?(:public) ? options.delete(:public) : true
content_type = options.delete(:content_type) || 'application/json'
data = Rails.cache.fetch(cache_key, { raw: true }.merge(options)) do
yield.to_json
end
expires_in options[:expires_in], public: cache_public
render json: data, content_type: content_type
end
def set_cache_headers
response.headers['Vary'] = public_fetch_mode? ? 'Accept' : 'Accept, Signature'
end
end