AngularJS和django tastypie返回的复杂JSON

Question

我在AngularJS上编写了很少的资源来访问Tastypie API.一切都运行正常,除了细节:tastypie总是将实际结果封装在objectsJSON 的属性中,例如:

/api/v1/reminder/:

{
    meta: {
        limit: 20,
        next: null,
        offset: 0,
        previous: null,
        total_count: 3
    },
    objects: [{
        category: {
            color: "#999999",
            id: 1,
            name: "Groceries",
            resource_uri: "/api/v1/category/1"
        },
        description: "",
        due_date: "2010-10-16",
        id: 1,
        repeat: "weekly",
        resource_uri: "/api/v1/reminder/1",
        value: "-50"
    }, {
        category: {
            color: "#999999",
            id: 1,
            name: "Groceries",
            resource_uri: "/api/v1/category/1"
        },
        description: "",
        due_date: "2010-10-17",
        id: 2,
        repeat: "weekly",
        resource_uri: "/api/v1/reminder/2",
        value: "-50"
    }
}

使用回调get()调用修复是很糟糕的:

Reminder.get().$then(function (result) {
    $scope.reminders  = result.data.objects;
});

但我知道这result.resource是一个实际的Reminder例子.

.factory('Reminder', ['$resource', function($resource){
    var Reminder = $resource('/api/v1/reminder/:id', {}, {
        get: {
            method: 'GET',
            isArray: false
        }
    });

    Reminder.prototype.TESTE = function () {console.log('asd');};

    return Reminder;
}])

现在我需要在我的Reminder类上实现行为,并且我需要我的每个元素meta.objects都是Reminder:

Reminder.get().$then(function (result) {
    $scope.reminders  = result.data.objects;

    result.resource.TESTE(); // -> outputs 'asd'

    o = result.data.objects[0];
    o.TESTE // -> undefined, obvisously
    i = new Reminder(o);
    i.TESTE() // -> outputs 'asd'
});

那么,如何让angularjs理解每个对象objects都是实际的结果,所以它的行为就像一个实例列表？

解决方法是创建一个新的列表,迭代创建实例的结果,但它不是最佳的......

建议？

解决方案@rtcherry:

正如rtcherry所说,我使用了restangular

配置读取请求数据:

.config(['RestangularProvider', function(RestangularProvider) {
    RestangularProvider.setBaseUrl("/api/v1");

    RestangularProvider.setResponseExtractor(function(response, operation, what, url) {
        var newResponse;
        if (operation === "getList") {
            newResponse = response.objects;
            newResponse.metadata = response.meta;
        } else {
            newResponse = response.data;
        }
        return newResponse;
    });
}])

加载提醒:

function RemindersCtrl ($scope, $rootScope, Reminder) {
    $scope.reminders = Reminder.getList();
}

添加我的自定义方法Reminder(不像ngResource那样干净,但可行):

.factory('Reminder', ['Restangular', '$filter', function(Restangular, $filter){
    var Reminder = Restangular.all('reminder');

    var remainingDays = function () {
        //do stuff
    };

    // adding custom behavior
    Restangular.addElementTransformer('reminder', false, function (reminder) {
        reminder.remainingDays = remainingDays;
        return reminder;
    });

    return Reminder;
}])

@moderndegree解决方案:

我用纯净的ngResource:

var tastypieDataTransformer = function ($http) {
    return $http.defaults.transformResponse.concat([
        function (data, headersGetter) {
            var result = data.objects;
            result.meta = data.meta;
            return result;
        }
    ])
};

...

.factory('Reminder', ['$resource', '$http', function($resource, $http){
    var Reminder = $resource('/api/v1/reminder/:id', {}, {
        query: {
            method: 'GET',
            isArray: true,
            transformResponse: tastypieDataTransformer($http)
        }
    });

    Reminder.prototype.remainingDays = function () {
        // doing stuff
    };

    return Reminder;
}])

我的控制器:

Transaction.query(filter).$then(function (result) {
    $scope.days = [];
    var transactions = result.resource;
    resource[0].remainingDays(); // it works

});

Answer 1

如果您想避免使用其他库,则应该能够执行以下操作:

$resource('/api/v1/reminder/', {}, {
    query: {
        method: 'GET',
        isArray: true,
        transformResponse: $http.defaults.transformResponse.concat([
            function (data, headersGetter) {
                return data.objects;
            }
        ])
    }
});

这会将您的变换附加到$HttpProvider默认变换器.

注意:如果我错了,请纠正我,但我相信此功能需要v1.1.2或更高版本.