即使$ scope变量已更新数据,UI也不会更新

时间:2017-04-27 05:26:54

标签: javascript html angularjs angularjs-scope

我通过服务获取我的视图数据并使用angular.copy()分配给局部变量;

var init = function () {
        $scope.product = angular.copy(EditItemFactory.getSelectedItem());

    }

View of my UI after calling init function

$scope.UpdateItem = function (data) {
        console.log(data);
        var Data = DataFactory.UpdateItem(data);

        if (parseInt(Data) != 0) {

            $modalInstance.dismiss('Close');
        } else {
            console.log(Data);
        }
    }

我正在传递更新功能以更新项目并存储在数据库中。

但在DB中更新后,数据正​​在UI中更新

以下是我的控制器的完整代码:

(function () {

var productEditCtrl = function ($scope, $modalInstance, EditItemFactory, DataFactory) {




    $scope.cancel = function () {
        $modalInstance.dismiss('Close');
    };

    $scope.UpdateItem = function (data) {
        console.log(data);
        var Data = DataFactory.UpdateItem(data);

        if (parseInt(Data) != 0) {

            $modalInstance.dismiss('Close');
        } else {
            console.log(Data);
        }
    }

    var init = function () {
        $scope.product = angular.copy(EditItemFactory.getSelectedItem());

    }

    init();
}
productEditCtrl.$inject = ['$scope', '$modalInstance', 'EditItemFactory', 'DataFactory']
angular.module("SplitWise").controller("productEditCtrl", productEditCtrl)())

我无法将更改绑定到UI。

注意:我想在更新的数据存储到数据库后才更新UI

数据工厂代码:

(function(){

var DataFactory = function($http)
{
    var factory = {};




    factory.getAllItems = function()
    {
        return $http.get("http://localhost:8080/GetAllItems")
    }

    factory.DeleteItem = function(Product)
    {

        $http.post("http://localhost:8080/DeleteItem",{"Model":Product.MODEL_NUMBER}).success(function(data){
            return data;
        }).error(function(err)
                {
            return err;
        })
    }

    factory.UpdateItem = function(Product)
    {

        $http.post("http://localhost:8080/UpdateItem",{"Model":Product.MODEL_NUMBER,"Name":Product.NAME,"MSRP":Product.MSRP,"Quantity":Product.QUANTITY}).success(function(Data){
            return Data;
        }).error(function(err){
            return err;
        })
    }
    return factory
}
DataFactory.$inject=['$http']
angular.module('SplitWise').factory("DataFactory",DataFactory)

}())

1 个答案:

答案 0 :(得分:0)

$http.post是异步的,因此UpdateItem函数在从服务器接收之前返回Data,因此它是undefinded。你想要做的就是等到成功分配,然后用它做点什么。

var DataFactory = function($http) {

// ...

factory.UpdateItem = function(Product)
    {    
        return $http.post("http://localhost:8080/UpdateItem",{"Model":Product.MODEL_NUMBER,"Name":Product.NAME,"MSRP":Product.MSRP,"Quantity":Product.QUANTITY});
    }

// ...

}

然后像这样使用UpdateItem函数:

$scope.UpdateItem = function (data) {
    console.log(data);
    DataFactory.UpdateItem(data).then(function(resp) {

        if (parseInt(resp.data) != 0) {

            $modalInstance.dismiss('Close');
        } else {
            console.log(resp);
        }
    }, function(err) {
        console.log(err);
    });
}