Messaging users from Web API 2.0

[mark goldin]

What is a recommended way of sending messages back to Angular application in case or run time errors or any other (validation, permission, etc) issues?

Thanks

[Sander Elias]

Hi Mark,

Are you asking what to do on the server with this stuff, or are you asking on how to inform your user? 

To send error's back to the user from the server, I usually look for an http error code that fits, and put some (end user understandable) detail in the description.

Regards

Sander

[Daniel Lidström]

Here's an example api (for creating tasks) that combines success response status codes with error validation responses:

https://github.com/dlidstrom/Tasks/blob/master/Tasks/Controllers/Api/TaskController.cs

Is this what you were asking for?

[mark goldin]

I am mostly looking for design patterns for backend to communicate business messages back to angular client.

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[Sander Elias]

Hi Mark,

Ok, then I did understand your question correctly, and my answer is correct. It is a good design patters to leverage the existing http error numbers, and add in your own error messages in the description part.

Regards

Sander