ruby-on-rails - 如何判断Rails异常会呈现哪个错误状态代码？

有没有一种方法可以告诉rail在生产中针对特定错误代码(例如ActionController::ParameterMissing)呈现哪些错误代码？

最佳答案

Rails source code定义此映射:

  "ActionController::RoutingError"               => :not_found,
  "AbstractController::ActionNotFound"           => :not_found,
  "ActionController::MethodNotAllowed"           => :method_not_allowed,
  "ActionController::UnknownHttpMethod"          => :method_not_allowed,
  "ActionController::NotImplemented"             => :not_implemented,
  "ActionController::UnknownFormat"              => :not_acceptable,
  "ActionController::InvalidAuthenticityToken"   => :unprocessable_entity,
  "ActionController::InvalidCrossOriginRequest"  => :unprocessable_entity,
  "ActionDispatch::Http::Parameters::ParseError" => :bad_request,
  "ActionController::BadRequest"                 => :bad_request,
  "ActionController::ParameterMissing"           => :bad_request,
  "Rack::QueryParser::ParameterTypeError"        => :bad_request,
  "Rack::QueryParser::InvalidParameterError"     => :bad_request