Rails HTTP Status Code to Symbol Mapping

The symbol used is an underscored version of the status message with no spaces. A quick Ruby script yields the following mapping:

Status Code	Status Message	Symbol
1xx Informational
100	Continue	:continue
101	Switching Protocols	:switching_protocols
102	Processing	:processing
2xx Success
200	OK	:ok
201	Created	:created
202	Accepted	:accepted
203	Non-Authoritative Information	:non_authoritative_information
204	No Content	:no_content
205	Reset Content	:reset_content
206	Partial Content	:partial_content
207	Multi-Status	:multi_status
226	IM Used	:im_used
3xx Redirection
300	Multiple Choices	:multiple_choices
301	Moved Permanently	:moved_permanently
302	Found	:found
303	See Other	:see_other
304	Not Modified	:not_modified
305	Use Proxy	:use_proxy
307	Temporary Redirect	:temporary_redirect
4xx Client Error
400	Bad Request	:bad_request
401	Unauthorized	:unauthorized
402	Payment Required	:payment_required
403	Forbidden	:forbidden
404	Not Found	:not_found
405	Method Not Allowed	:method_not_allowed
406	Not Acceptable	:not_acceptable
407	Proxy Authentication Required	:proxy_authentication_required
408	Request Timeout	:request_timeout
409	Conflict	:conflict
410	Gone	:gone
411	Length Required	:length_required
412	Precondition Failed	:precondition_failed
413	Request Entity Too Large	:request_entity_too_large
414	Request-URI Too Long	:request_uri_too_long
415	Unsupported Media Type	:unsupported_media_type
416	Requested Range Not Satisfiable	:requested_range_not_satisfiable
417	Expectation Failed	:expectation_failed
422	Unprocessable Entity	:unprocessable_entity
423	Locked	:locked
424	Failed Dependency	:failed_dependency
426	Upgrade Required	:upgrade_required
5xx Server Error
500	Internal Server Error	:internal_server_error
501	Not Implemented	:not_implemented
502	Bad Gateway	:bad_gateway
503	Service Unavailable	:service_unavailable
504	Gateway Timeout	:gateway_timeout
505	HTTP Version Not Supported	:http_version_not_supported
507	Insufficient Storage	:insufficient_storage
510	Not Extended	:not_extended

http://www.codyfauser.com/2008/7/4/rails-http-status-code-to-symbol-mapping