function not returning value to client from server

Question

I have a function to access mongodb using mongoose, the database call works and appears in the console but it doesn't return that array as it should. Can't figure out why.

exports.getPrices = function() {
    return Price.find().exec(function (err, docs) {
        if (err) { 
            return err;
        }
        console.log(docs);
        return docs;
    });
};

the call from the service

angular.module('core')
    .factory('Machineprice', [ '$http',
        function($http) {
            return {
                getPrices:function(){  
                    return $http.get('/getPrices')    
                }
            };
        }
    ]
);

the controller

angular.module('core').controller('MachinePricingController', ['$scope','Machineprice',
    function($scope, Machineprice) {    
        $scope.prices = Machineprice.getPrices();
        console.log($scope.prices);
    }
]);

Answer 1

It's not working because the getPrices() runs asynchronously which means it doesn't return the result instantly. That function returns a promise which means the result has to be dealt with in a callback function.

Quote from AngularJS site:

The $http service is a function which takes a single argument — a configuration object — that is used to generate an HTTP request and returns a promise.

To make it work, you have to change the code of your controller.

angular.module('core').controller('MachinePricingController', ['$scope', 'Machineprice',

function ($scope, Machineprice) {
    Machineprice.getPrices().then(function (response) {
        $scope.prices = response.data;
        console.log($scope.prices);
    });

}]);