vendor/rails/actionpack/lib/action_controller/rewindable_input.rb

   1 module ActionController
   2   class RewindableInput
   3     class RewindableIO < ActiveSupport::BasicObject
   4       def initialize(io)
   5         @io = io
   6         @rewindable = io.is_a?(::StringIO)
   7       end
   8
   9       def method_missing(method, *args, &block)
  10         unless @rewindable
  11           @io = ::StringIO.new(@io.read)
  12           @rewindable = true
  13         end
  14
  15         @io.__send__(method, *args, &block)
  16       end
  17     end
  18
  19     def initialize(app)
  20       @app = app
  21     end
  22
  23     def call(env)
  24       env['rack.input'] = RewindableIO.new(env['rack.input'])
  25       @app.call(env)
  26     end
  27   end
  28 end