vendor/rails/actionpack/lib/action_controller/vendor/rack-1.0/rack/methodoverride.rb

   1 module Rack
   2   class MethodOverride
   3     HTTP_METHODS = %w(GET HEAD PUT POST DELETE OPTIONS)
   4
   5     METHOD_OVERRIDE_PARAM_KEY = "_method".freeze
   6     HTTP_METHOD_OVERRIDE_HEADER = "HTTP_X_HTTP_METHOD_OVERRIDE".freeze
   7
   8     def initialize(app)
   9       @app = app
  10     end
  11
  12     def call(env)
  13       if env["REQUEST_METHOD"] == "POST"
  14         req = Request.new(env)
  15         method = req.POST[METHOD_OVERRIDE_PARAM_KEY] ||
  16           env[HTTP_METHOD_OVERRIDE_HEADER]
  17         method = method.to_s.upcase
  18         if HTTP_METHODS.include?(method)
  19           env["rack.methodoverride.original_method"] = env["REQUEST_METHOD"]
  20           env["REQUEST_METHOD"] = method
  21         end
  22       end
  23
  24       @app.call(env)
  25     end
  26   end
  27 end