aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/lib/active_record/query_cache.rb
blob: 093c6c1e555105274bbb8122148025b6b7a54690 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
require 'active_support/core_ext/object/blank'

module ActiveRecord
  class QueryCache
    module ClassMethods
      # Enable the query cache within the block if Active Record is configured.
      def cache(&block)
        if ActiveRecord::Base.configurations.blank?
          yield
        else
          connection.cache(&block)
        end
      end

      # Disable the query cache within the block if Active Record is configured.
      def uncached(&block)
        if ActiveRecord::Base.configurations.blank?
          yield
        else
          connection.uncached(&block)
        end
      end
    end

    def initialize(app)
      @app = app
    end

    def call(env)
      ActiveRecord::Base.cache do
        @app.call(env)
      end
    end
  end
end