Hack Your Design!

RailsのHTTPステータスのシンボル表現まとめ

よく忘れるのでメモ。

Response Class HTTP Status Code Symbol
Informational 100 :continue
  101 :switching_protocols
  102 :processing
Success 200 :ok
  201 :created
  202 :accepted
  203 :non_authoritative_information
  204 :no_content
  205 :reset_content
  206 :partial_content
  207 :multi_status
  208 :already_reported
  226 :im_used
Redirection 300 :multiple_choices
  301 :moved_permanently
  302 :found
  303 :see_other
  304 :not_modified
  305 :use_proxy
  306 :reserved
  307 :temporary_redirect
  308 :permanent_redirect
Client Error 400 :bad_request
  401 :unauthorized
  402 :payment_required
  403 :forbidden
  404 :not_found
  405 :method_not_allowed
  406 :not_acceptable
  407 :proxy_authentication_required
  408 :request_timeout
  409 :conflict
  410 :gone
  411 :length_required
  412 :precondition_failed
  413 :request_entity_too_large
  414 :request_uri_too_long
  415 :unsupported_media_type
  416 :requested_range_not_satisfiable
  417 :expectation_failed
  422 :unprocessable_entity
  423 :locked
  424 :failed_dependency
  426 :upgrade_required
  428 :precondition_required
  429 :too_many_requests
  431 :request_header_fields_too_large
Server Error 500 :internal_server_error
  501 :not_implemented
  502 :bad_gateway
  503 :service_unavailable
  504 :gateway_timeout
  505 :http_version_not_supported
  506 :variant_also_negotiates
  507 :insufficient_storage
  508 :loop_detected
  510 :not_extended
  511 :network_authentication_required

ちなみにこれのRuby元コードはどこにあるかというとrack/rack/lib/rack/utils.rbにあります。

HTTP_STATUS_CODES = {
  100 => 'Continue',
  101 => 'Switching Protocols',
  102 => 'Processing',
  200 => 'OK',
  201 => 'Created',
  202 => 'Accepted',
  203 => 'Non-Authoritative Information',
  204 => 'No Content',
  205 => 'Reset Content',
  206 => 'Partial Content',
  207 => 'Multi-Status',
  208 => 'Already Reported',
  226 => 'IM Used',
  300 => 'Multiple Choices',
  301 => 'Moved Permanently',
  302 => 'Found',
  303 => 'See Other',
  304 => 'Not Modified',
  305 => 'Use Proxy',
  307 => 'Temporary Redirect',
  308 => 'Permanent Redirect',
  400 => 'Bad Request',
  401 => 'Unauthorized',
  402 => 'Payment Required',
  403 => 'Forbidden',
  404 => 'Not Found',
  405 => 'Method Not Allowed',
  406 => 'Not Acceptable',
  407 => 'Proxy Authentication Required',
  408 => 'Request Timeout',
  409 => 'Conflict',
  410 => 'Gone',
  411 => 'Length Required',
  412 => 'Precondition Failed',
  413 => 'Payload Too Large',
  414 => 'URI Too Long',
  415 => 'Unsupported Media Type',
  416 => 'Range Not Satisfiable',
  417 => 'Expectation Failed',
  422 => 'Unprocessable Entity',
  423 => 'Locked',
  424 => 'Failed Dependency',
  426 => 'Upgrade Required',
  428 => 'Precondition Required',
  429 => 'Too Many Requests',
  431 => 'Request Header Fields Too Large',
  500 => 'Internal Server Error',
  501 => 'Not Implemented',
  502 => 'Bad Gateway',
  503 => 'Service Unavailable',
  504 => 'Gateway Timeout',
  505 => 'HTTP Version Not Supported',
  506 => 'Variant Also Negotiates',
  507 => 'Insufficient Storage',
  508 => 'Loop Detected',
  510 => 'Not Extended',
  511 => 'Network Authentication Required'
}

これをシンボル化してるのが下記。

SYMBOL_TO_STATUS_CODE = Hash[*HTTP_STATUS_CODES.map { |code, message|
  [message.downcase.gsub(/\s|-|'/, '_').to_sym, code]
}.flatten]
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