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DbEntityValidationException - How can I easily tell what caused the error?
...es class. You can catch the DbEntityValidationException, unwrap the actual errors and create a new DbEntityValidationException with the improved message.
Create a partial class next to your SomethingSomething.Context.cs file.
Use the code at the bottom of this post.
That's it. Your implementation...
Fastest way to copy file in node.js
...e, you'd want to check both the createReadStream and createWriteStream for errors, so you wouldn't get a one-liner (though it would still be just as fast).
– ebohlman
Jul 4 '12 at 0:37
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Fully custom validation error message with Rails
Using Rails I'm trying to get an error message like "The song field can't be empty" on save. Doing the following:
17 Answer...
Handle Guzzle exception and get HTTP body
I would like to handle errors from Guzzle when the server returns 4xx and 5xx status codes. I make a request like this:
5 A...
Is there any standard for JSON API response format?
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For error responses specifically I also like the Problem Details for HTTP APIs RFC draft.
– Pieter Ennes
Feb 13 '14 at 12:36
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PG undefinedtable error relation users does not exist
...y required):
RAILS_ENV=test rake db:seed
On newer versions of Rails the error ActiveRecord::NoEnvironmentInSchemaError may be risen, so just prepend the tasks with a database environment set task: db:environment:set:
RAILS_ENV=test rake db:environment:set db:drop db:create db:migrate
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WebApi's {“message”:“an error has occurred”} on IIS7, not in IIS Express
...art.Data.Linq dll.
To get to that answer, I turned on IIS tracing for 500 errors. That gave a little bit of information, but the really helpful thing was in the web.config setting the <system.web><customErrors mode="Off"/></system.web> This pointed to a missing dynamically-loaded...
ModelState.AddModelError - How can I add an error that isn't for a property?
...and fvm.prop2 already exist in that combination; if so, I want to add an error to the modelstate, then return the whole view. I tried:
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What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
...stdout should be used for actual program output, while all information and error messages should be printed to stderr, so that if the user redirects output to a file, information messages are still printed on the screen and not to the output file.
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What is the difference between `throw new Error` and `throw someObject`?
I want to write a common error handler which will catch custom errors thrown on purpose at any instance of the code.
9 Answ...