【Rails】HTTP レスポンスステータスコード/シンボル対応表

| ステータスコード | シンボル                          | 参考URL |
|------------------|---------------------------------------|---------|
| 100              | :continue                             |         |
| 101              | :switching_protocols                  |         |
| 102              | :processing                           |         |
| 103              | :early_hints                          |         |
| 200              | :ok                                   | https://developer.mozilla.org/ja/docs/Web/HTTP/Status/200        |
| 201              | :created                              |   https://developer.mozilla.org/ja/docs/Web/HTTP/Status/201      |
| 202              | :accepted                             |         |
| 203              | :non_authoritative_information        |         |
| 204              | :no_content                           | https://developer.mozilla.org/ja/docs/Web/HTTP/Status/204        |
| 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                            |         |
| 306              | :unused                               |         |
| 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                   |         |
| 421              | :misdirected_request                  |         |
| 422              | :unprocessable_entity                 |         |
| 423              | :locked                               |         |
| 424              | :failed_dependency                    |         |
| 425              | :too_early                            |         |
| 426              | :upgrade_required                     |         |
| 428              | :precondition_required                |         |
| 429              | :too_many_requests                    |         |
| 431              | :request_header_fields_too_large     |         |
| 451              | :unavailable_for_legal_reasons       |         |
| 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                        |         |
| 509              | :bandwidth_limit_exceeded             |         |
| 510              | :not_extended                         |         |
| 511              | :network_authentication_required      |         |