1 files changed, 27 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/methodoverride.rb b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/methodoverride.rb
new file mode 100644
index 0000000000..0eed29f471
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/methodoverride.rb
@@ -0,0 +1,27 @@
+module Rack
+  class MethodOverride
+    HTTP_METHODS = %w(GET HEAD PUT POST DELETE OPTIONS)
+
+    METHOD_OVERRIDE_PARAM_KEY = "_method".freeze
+    HTTP_METHOD_OVERRIDE_HEADER = "HTTP_X_HTTP_METHOD_OVERRIDE".freeze
+
+    def initialize(app)
+      @app = app
+    end
+
+    def call(env)
+      if env["REQUEST_METHOD"] == "POST"
+        req = Request.new(env)
+        method = req.POST[METHOD_OVERRIDE_PARAM_KEY] ||
+          env[HTTP_METHOD_OVERRIDE_HEADER]
+        method = method.to_s.upcase
+        if HTTP_METHODS.include?(method)
+          env["rack.methodoverride.original_method"] = env["REQUEST_METHOD"]
+          env["REQUEST_METHOD"] = method
+        end
+      end
+
+      @app.call(env)
+    end
+  end
+end