instance method `middleware`

Ruby on Rails 3.0.20

Since v2.3.18

Available in: v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

middleware()

Middleware class can be inserted as a Rack handler to be local cache for the duration of request.

Source

# File activesupport/lib/active_support/cache/strategy/local_cache.rb, line 55
        def middleware
          @middleware ||= begin
            klass = Class.new
            klass.class_eval(<<-EOS, __FILE__, __LINE__ + 1)
              class << self
                def name
                  "ActiveSupport::Cache::Strategy::LocalCache"
                end
                alias :to_s :name
              end

              def initialize(app)
                @app = app
              end

              def call(env)
                Thread.current[:#{thread_local_key}] = LocalStore.new
                @app.call(env)
              ensure
                Thread.current[:#{thread_local_key}] = nil
              end
            EOS
            klass
          end
        end

Defined in activesupport/lib/active_support/cache/strategy/local_cache.rb line 55 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Cache::Strategy::LocalCache

Signature