從多個承諾

Question

我總是在控制檯看到如何回報承諾風趣h動車組承諾：

var _addOrDeleteUser = function (userId, addToProjects, removeFromProjects) { 
    var deferred = $q.defer(); 
    var promises = []; 

    promises.push(projectResource.addUserToProjects({ userId: userId }, addToProjects, function (result) { 
     console.log("addUserToProjects"); 
     deferred.resolve(); 
     return result; 
    })); 

    promises.push(projectResource.deleteUserFromProjects({ userId: userId }, removeFromProjects, function (result) { 
     console.log("deleteUserFromProjects"); 
     deferred.resolve(); 
     return result; 
    })); 

    return $q.all(promises); 
} 

Answer 1

您可以使用鏈接的承諾爲 -

travelService 
     .getDeparture(user)           // Request #1 
     .then(function(departure){ 
      $scope.departure = departure;       // Response Handler #1 
      return travelService.getFlight(departure.flightID);  // Request #2 
     }) 
     .then(function(flight){ 
      $scope.flight = flight;        // Response Handler #2 
      return weatherService.getForecast($scope.departure.date); // Request #3 
     }) 
     .then(function(weather){ 
      $scope.weather = weather;        // Response Handler #3 
     }); 

有關詳細信息參見this