CODEWITHSUNDEEP
angularjspromise
Mediator
Mediator

Reputation: 15378

How to wait for a promise resolution?

I need to wait for a promise resolution.

 function myFunction(myService, projectId) {
        var localdata;
        var myDataPromise = myService.getData(projectId);
        myDataPromise.then(function(result) {  
           localdata = result;
        });
        var someResult = someProcess(localdata); // I need to wait for promise resolution.
        return someResult;
    }

UPDATE

I try to clarify my question. I have the myService service with function which return promise:

var getData = function (projectId) {
        return projectResource.getProjectUser({ projectId: projectId }, function (result) {
            return result;
        }).$promise;
    };

Upvotes: 0

Views: 198

Answers (2)

Mik378
Mik378

Reputation: 22171

You don't need a local variable ... 

function myFunction(myService) {
    return myService.getData().then(function(result) {  
       return result;
    });
}

and your caller would be: 

myFunction(myService).then(function(result){
    //you can be sure that result is fully computed here
    console.log("Your result " + result);
})

Upvotes: 1

Amir Popovich
Amir Popovich

Reputation: 29836

You don't want to return data from a promise!
You do want to return a promise in order to "continue" the chain.

The wait you are looking for is the callbacks you attach to the promise.

function myFunction($scope, myService) {
    var myDataPromise = myService.getData();

    myDataPromise.then(function(result) {  
       // this is the "wait" your looking for.. 
       $scope.data = result;
       console.log("data.name"+$scope.data.name);
    });

    return myDataPromise; // return the promise
}

Upvotes: 0

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