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Sign in to your account. For a url that raises ActionController::BadRequestrails will return a response rather than a This only seems to occur when using congig. As best as I can tell, the intial request raises ActionController::BadRequest and sets the error code to But the exceptions app itself raises ActionController::BadRequest and two lines later the error is caught by the resuce block and the failsafe response is returned:.
I'm not sure what the best way to resolve this might be since there obviously needs to be a fail-safe response. Possibly related to Output without config.
I think it is because the exception app raised again ActionController::BadRequest when trying to parse the parameters. Could you create an example application? If you use a custom exceptions app, then you have to make sure it works as expected. Be aware that request. Consider capturing it within your custom exceptions app. Yes, it may be Rails responsibility in this case but backport this fix is not easy so I prefer to fix only in 4.
Unfortunately, this bug came back only to 4. Also, this isn't fixable by design, as request. Pull request already sent: I was just reviewing and I think I'm going to merge your PR to 4. We use optional third-party analytics cookies to understand how you use GitHub.Actions that fail to perform as expected throw exceptions.
These exceptions can either be rescued for the public view with a nice user-friendly explanation or for the developers view with tons of debugging information. The developers view is already implemented by the Action Controller, but the public view should be tailored to your specific application.
The default behavior for public exceptions is to render a static html file with the name of the error code thrown. If no such file exists, an empty response is sent with the correct status code. True if the request came from localhost, Override this method if you wish to redefine the meaning of a local request to include remote IP addresses or other criteria.
At first, it will try to render a localized static page. If none of them exist, the body of the response will be left empty. Override this method to provide more user friendly error messages.
Overwrite to implement custom logging of errors. By default logs as fatal. Exception handler called when the performance of an action raises an exception.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. This works fine except when I raise an exception in the ApplicationController. The controller looks like this:. When I request any page I would expect to get a status response. Instead of this Rails returns a status. The log shows this error message:. If it isn't, comment it out and see if the error still persist. Learn more. Error during failsafe response when raising an exception in ApplicationController Ask Question.
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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. From jacob.
Controllers and Action Methods in ASP.NET MVC Applications
We're using the latest version of passenger 3. And is not URL encoded. If I URL encode that path there are no problems. This seems to be similar to issue but that's slightly different and supposed to be fixed. Rails: 2.
It is possible that it has crash ed; please check whether there are crashing bugs in this application. From honglilai on August 26, This is due to encoding settings in Ruby. We use optional third-party analytics cookies to understand how you use GitHub. Learn more. You can always update your selection by clicking Cookie Preferences at the bottom of the page. For more information, see our Privacy Statement. We use essential cookies to perform essential website functions, e.
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I'd expect: Bad Request - The request could not be understood by the server due to malformed syntax. Since this error is result of user input, it should NOT return - internal server error because its not a server error. Now, investigating is how a proper response can be issued issued instead of general error It seems due to bad request params? First step, Wrote testcases that showcase this problem. Thanks for writing all that out; I can't check it out at the moment, but I'm sure it'll be very helpful to someone.
I was able to reproduce the Internal Server Error in production with gaurish 's fork, but it turns out my test app was just missing a root route. After adding root to: 'welcome indexboth dev and prod gave Bad Request. This explains it. I tested out by manually creating a route,controller and action. If not, then I guess this issue can be safely closed. Also found this error, the problem were with pickadate. It's adding additional field with name " For anyone coming to this in future, this issue is a red herring and should be closed.
Rails catches the error in question and has for some time. If you're seeing this error, you probably have config.Recently, I have been building an API as part of my day job. Rails is a great framework to build APIs in, and it has been a joy so far. When building the responses of the API, it's paramount to understand what HTTP statuses you should utilize, which will in return help the consumers by providing more meaningful responses.
Sure, you could always have a status property in the response JSON, which will be a human-readable status code. But, I would like you to think about HTTP status codes as a nice card on a present, with your beautiful handwriting and best wishes to whom the gift goes to. HTTP status code don't just add more semantical correctness, but they also speak about the nature of the response.
Ruby on Rails, being a great framework, adds a very nice layer of abstraction of the status codes, and allows the developers to easily use custom status codes in their responses.
I am sure, at some point you have seen something like:. While this might be sometimes redundant, the render method in Rails allows you to specify HTTP status codes for the response.
The two code samples are identical, they specify the HTTP status code to the response. But, what are the available Rails status codes as symbols that you can use? And how does Rails actually do this? The HTTP status codes list is a quite stable and static list. Although sometimes status codes are added to the list, once you learn it, keeping up to date is rather easy. You can see the RFC where it was proposed here. So, how does Rails knows how to create all of these symbols, so we can use them in our render methods?
Well, what's very interesting is that Rails actually doesn't do much about this. It relies on Rack, which does all of this magic. In an irb session, type:. If you open the Rack::Utils documentation you can see how these are programmatically created, including the code that does the conversion.
The status codes are pulled from this CSV file and are parsed using this piece of code:. But, how do we get the symbolized versions of the status messages? Well, Rack does that for us as well. In an irb session, try this:. Having all of this documentation in place, is rather easy to see how everything falls into place.
Rails being a Rack app, can utilize everything that Rack provides, and this is just an example. But, how does Rails actually plugs this into its runtime and has the ability to understand what is the status code?
So, how does Rails know what status code to apply to the response, if you provide just the symbolized version on the status? On the surface, or what we usually see as developers, the rendering is done in the controllers. This means that all of our controllers are subclasses of the ActionController::Base class. If you open the source code of the ActionController::Base class, you will see some very interesting things, that can be quite informative.
But for our use case, we are interested in the following:. This piece of code, actually includes all of these modules in the ActionController::Base class, which in return gives us all of the functionlities that our controllers have.The ASP. Controllers process incoming requests, handle user input and interactions, and execute appropriate application logic. A controller class typically calls a separate view component to generate the HTML markup for the request.
The Controller class inherits from ControllerBase and is the default implement of a controller. The Controller class is responsible for the following processing stages:.
NET page types views. To help secure access to controllers and action methods, you can use the AuthorizeAttribute class. All controller classes must be named by using the "Controller" suffix.
The following example shows the sample controller class, which is named HomeController. This controller class contains action methods that render view pages. In ASP. NET applications that do not use the MVC framework, user interaction is organized around pages, and around raising and handling events from the page and from controls on the page.
In contrast, user interaction with ASP. The controller defines action methods. Controllers can include as many action methods as needed. Action methods typically have a one-to-one mapping with user interactions.
Examples of user interactions include entering a URL into the browser, clicking a link, and submitting a form. Each of these user interactions causes a request to be sent to the server. The controller then determines the appropriate action method to handle the request. By default, the URL of a request is treated as a sub-path that includes the controller name followed by the action name.
The default routing rule treats "Products" as the prefix name of the controller, which must end with "Controller" such as ProductsController.
How Rails handles status codes
It treats "Categories" as the name of the action. Therefore, the routing rule invokes the Categories method of the Products controller in order to process the request. By default, the value "5" in the URL will be passed to the Detail method as a parameter. Most action methods return an instance of a class that derives from ActionResult.
The ActionResult class is the base for all action results. However, there are different action result types, depending on the task that the action method is performing. For example, the most common action is to call the View method. You can create action methods that return an object of any type, such as a string, an integer, or a Boolean value. These return types are wrapped in an appropriate ActionResult type before they are rendered to the response stream.
The following table shows the built-in action result types and the action helper methods that return them. Renders a partial view, which defines a section of a view that can be rendered inside another view. By default, the MVC framework treats all public methods of a controller class as action methods.
If your controller class contains a public method and you do not want it to be an action method, you must mark that method with the NonActionAttribute attribute. By default, the values for action method parameters are retrieved from the request's data collection. The controller class locates the action method and determines any parameter values for the action method, based on the RouteData instance and based on the form data. If the parameter value cannot be parsed, and if the type of the parameter is a reference type or a nullable value type, null is passed as the parameter value.
Otherwise, an exception is thrown.