How to handle error in angular-ui-router's resolve

Question

I am using angular-ui-router's resolve to get data from server before moving to a state. Sometimes the request to the server fails and I need to inform the user about the failure. If I call the server from the controller, I can put then and call my notification service in it in case the call fails. I put the call to the server in resolve because I want descendant states to wait for the result from the server before they start.

Where can I catch the error in case the call to the server fails? (I have read the documentation but still unsure how. Also, I'm looking for a reason to try out this new snippet tool :).

Answer 1

Old question but I had the same problem and stumbled on this in ui-router's FAQ section

If you are having issues where a trivial error wasn't being caught because it was happening within the resolve function of a state, this is actually the intended behavior of promises per the spec.

errors within resolve.

So you can catch all resolve errors in the run phase of your app like this

$rootScope.$on('$stateChangeError', 
function(event, toState, toParams, fromState, fromParams, error){ 
        // this is required if you want to prevent the $UrlRouter reverting the URL to the previous valid location
        event.preventDefault();
        ... 
})