角度承诺-一次呼叫错误时$ q

Question

I have an array and I do for loop on the array. for eeach item - i do rest call and save it in the array restArr;

angular.foreach(myItems , function(item){
    var q = $http.get("someHttpCall").succsee(function(){}).error(function(){});

    restArr.push(q);
}

then i use $q

$q.all(restArr).then(function(){

    doSomething();

});

Firstly, what happend if one of the call returned with error? And second - there is a way to start again call that return with error?

thanks

Answer 1

If one of the promises within a $q.all is rejected, the overall promise is rejected. The rejection value is the same as that from the one rejected promise.

Catch the rejection, then handle your retry logic in the catch handler.

$q.all(restArr)
  .then(doSomething)
  .catch(handleError);