Question

我甚至不确定这里的问题是什么，我一直想弄清楚几天。我对MEAN堆栈有些新意，所以我可能会遗漏一些明显的东西。我基本上复制了mean.io后端控制器，模型和路由以及Angular控制器，视图和服务的样板代码。当我通过浏览器创建新客户端时，我现在收到此错误：

CastError: Cast to ObjectId failed for value "undefined" at path "_id"
    at ObjectId.cast (/Users/d/Web/personal/mean-app/node_modules/mongoose/lib/schema/objectid.js:116:13)
    at ObjectId.castForQuery (/Users/d/Web/personal/mean-app/node_modules/mongoose/lib/schema/objectid.js:165:17)
    at Query.cast (/Users/d/Web/personal/mean-app/node_modules/mongoose/lib/query.js:2270:32)
    at Query.findOne (/Users/d/Web/personal/mean-app/node_modules/mongoose/lib/query.js:1117:10)
    at Query.exec (/Users/d/Web/personal/mean-app/node_modules/mongoose/node_modules/mquery/lib/mquery.js:2181:16)
    at Query.exec (/Users/d/Web/personal/mean-app/node_modules/mongoose/lib/query.js:1748:19)
    at Function.ClientSchema.statics.load (/Users/d/Web/personal/mean-app/app/models/client.js:80:48)
    at exports.client (/Users/d/Web/personal/mean-app/app/controllers/clients.js:15:12)
    at paramCallback (/Users/d/Web/personal/mean-app/node_modules/express/lib/router/index.js:151:7)
    at param (/Users/d/Web/personal/mean-app/node_modules/express/lib/router/index.js:133:11)

控制器/ clients.js：

exports.client = function(req, res, next, id) {
    Client.load(id, function(err, client) {
        if (err) return next(err);
        if (!client) return next(new Error('Failed to load client ' + id));
        req.client = client;
        next();
    });
};

模型/ client.js：

ClientSchema.statics.load = function(id, cb) {
    this.findOne({ _id: id }).populate('user').exec(cb);
};

当我通过mongo shell手动插入客户端（db.clients.save({ name: "Bob" })）时，它会保存并显示在Node中，但当我通过Angular视图进行编辑时，它无法保存，给我一个类似的错误：

TypeError: Cannot read property 'id' of undefined

我想也许这意味着我的后端代码被找到了，而前端代码没有将所有必要的数据传递给后端。供参考：

公开/ JS /控制器/ clients.js

angular.module('mean.clients').controller('ClientsController', ['$scope', '$routeParams', '$location', 'Global', 'Clients', function ($scope, $routeParams, $location, Global, Clients) {
    $scope.global = Global;

    $scope.create = function() {
        var client = new Clients({
            name: this.name,
            contactName: this.contactName
        });
        client.$save(function(response) {
            $location.path('clients/' + response._id);
        });

        this.name = '';
        this.contactName = '';
    };

    // etc.
}]);

公开/ JS /服务/ clients.js

angular.module('mean.clients').factory('Clients', ['$resource', function($resource) {
    return $resource('clients/:clientId', {
        clientId: '@_id'
    }, {
        update: {
            method: 'PUT'
        }
    });
}]);

Answer 1

您需要在客户端对象中包含_id。

AngularJS应用程序没有正确地将数据传递给Node？

1 个答案: