I want to go beyond the default error handling given in ASP mvc. I have an errors controller, so I can hopefully give different error messages according to whats happened: i.e Invalid arguments, Permission denied, OMG DATABASE DEAD, etc.
But I cant seem to work out how to do this, this is what I have tried:
[HandleError(View="/Errors/InvalidArgument",ExceptionType=typeof(ArgumentException))]
It ends up giving a Runtime Error.
Also, on the same subject, is it possible to add more parameters that I could pass to the error controller, such as:
[HandleError(View="/Errors/InvalidArgument",ExceptionType=typeof(ArgumentException), Error="dumb arguments")]
Thanks
Just specify the View name, not it's path...as for passing arguments, I don't think you can.
Related
I am doing a number of business logic checks within the mutateAndGetPayload function of a relay mutation using the graphql-relay library. For any of these checks that fail I have an else clause that will throw an error, ig throw('You do not have permission to delete this resource');, however, when that happens, I get the error Cannot set property 'clientMutationId' of undefined returned to the frontend instead of the error I'm trying to return. It seems that I'm seeing this error because I'm not returning something this mutation cares about (or a promise that resolves to one), so I'm a little stumped ... what's the proper way to throw/return errors back to the client here?
One way is to use the GraphQLError Type
Working in NodeJS on the back end we have used the following library:
https://github.com/graphql/graphql-js/tree/master/src/error
However, what we have ended up using is a library that provides more flexibility:
https://github.com/kadirahq/graphql-errors
Either of these would be the best place to start.
Sorry for my English and writing through a translator.
I'm new here and I'm a bit lost in what I want, maybe you can help me out if they wish, as explained here:
I want to customize all the errors that may be produced (any status code that is a mistake. 404, 500, 204, 301 .... etc.) And also show suggestions based on the "module" and/or "action" from where the error occurred.
I also wish I could tell by the file redirection "setting.yml" application, something like this:
error_404_module: common
error_404_action: errors
error_500_module: common
error_500_action: errors
error_204_module: common
error_204_action: errors
error_301_module: common
error_301_action: errors
........
Within the "app/frontend/modules/common" in the "action.class.php" define "executeErrors" in which I receive the status code that has occurred and the module where the error occurred or except for well, getting partial show "app/frontend/modules/common/templates/_errorXXXSuccess.php" and the partial of the suggestion that I seek and extract the module "referer" where the error occurred.
Well, that's the idea, dynamic content for different types of error in different circumstances and working perfectly with the type codes 404 but not with the rest ...
I read that could place me in the middle of the event by creating a file "config/error.html.php" and "config/exception.html.php". Indeed if I produce such a 500 error and manually these files are executed. The problem is that from there I can not access variables from symfony. Because if so I could invoke "common/errors" and bad send as parameters the error status code and the module where it occurred, but it is not. From there all I can do is play with $ _SERVER and routing.yml but can not get good results because the environment is mixed with Development Production (/frontend_dev.php) and is something I also want to avoid.
That is, I want to get as in "setting.yml" does "error_404_module" and "error_404_action" but with different error codes. Thus allowing me to show my custom pages in production based on "error or exception" and/or "module or action" where the error has been released from production, and in case of being in development mode (/frontend_dev.php/....), show the symfony Dispatch.
Surely life is complicandome and has a simpler way to do what I want but after thousands of combinations do not get the right result. Even if symfony may not allow other types of error redirect from "setting.yml" is because they are reserved for him or something. I do not understand.
Please please help me because no documentation to find and secure here at least we left public for others who want to do something.
Many Thanks and greetings!
First of all - you can't get symfony to intercept all errors. Some of the errors may be server errors and the request won't even get to your application. You can reproduce some of them explicitly setting responses in symfony though, but I may not be necessary to deal with all of them.
As for the exact response: you should use a listener to hook your errors to a class that handles them according to your need. See: https://stackoverflow.com/a/7077818/580167 for implementation details.
I am trying to modify the messages.properties file for form input validated by a Command Object that is in specified in the controller. The output I get from the standard error message (that I modified slightly to assure I was hitting that specific one) is:
email cannot be empty test class com.dashboard.RegisterController$DashboardUserRegistrationCommand
but no variant of com.dashboard.RegisterController$DashboardUserRegistrationCommand.null.message
works
I am wondering what the correct specification should be.
Try to put DashboardUserRegistrationCommand outside (below) of RegisterController but still in the same file. Then com.dashboard.DashboardUserRegistrationCommand.. should work.
i.e. com.dashboard.DashboardUserRegistrationCommand.message.nullable
The typical layout of error messages is:
${packageName}.${className}.${propertyName}.${errorCode}
So for your example it would be:
com.dashboard.DashboardUserRegistrationCommand.message.nullable
In the Grails Reference on the right hand side there is a header titled 'Constraints'. On each page of the specific constraints listed under that header the ${errorCode} value is listed at the bottom of the page.
And sometimes you have to restart a run-app to get new messages to populate in a Grails project.
Just to help others in the future, I had the same issues and my problem was the way I was defining my key, I use now:
For default messages:
default.null.message=Write a value for {0}
For commmand error messages:
my.package.UserCommand.name.nullable=Please tell us your name
It is strange that sometimes you use nullable and sometimes you use null. The best thing is going to the Grails Constraints directly and check how is it done for example:
http://grails.org/doc/latest/ref/Constraints/nullable.html
I keep getting "NullReferenceError" in my output, could someone kindly explain what exactly this statement means.
Somewhere in your code, you are trying to access a member of a reference type, but the variable actually is null. Without code and a stacktrace it's impossible to say what exactly happens. It might be because some parameter is expecting a value but isn't supplied one.
If it helps, a decent description of NullReferenceException -- why/when they occur, and how to prevent them -- at http://www.dotnetperls.com/nullreferenceexception
I may be approaching this from the wrong angle entirely, but hopefully someone will know a way of acheiving what I'm after.
I reference a web service, which returns an ErrorInfo object. I add each returned error to the ModelState as a ModelError:
foreach(ErrorInfo error in serviceResponse)
ModelState.AddModelError(error.AssociatedField, error.Description);
For errors which relate to a particular input field (using strongly-typed Views here), I get a nice inline error returned to Html.ValidationMessageFor(x), which is great.
The problem is that in addition to these input-related errors, there may also be more generate results.
What I'd LIKE to do is have these output in a list similar to Html.ValidationSummary() - however if I do this at the moment, it will also include the errors which have already been displayed inline against each input.
Is there an elegant way of just displaying all the errors which DON'T relate to a particular form input?
This is a good enough solution for me, it doesn't print the individual error detail, but thats not important for the non-input related errors
Html.ValidationSummary(true, "Failed to login for some other reason")