Mongoose Model.find不是一个函数？

花了好几个小时试图解决这个问题 - 我正在为我的应用添加一个新模型，但是它失败了“TypeError：List.find不是一个函数”。我有另一个模型，项目，以相同的方式设置，并正常工作。事情似乎在路线上失败但是如果我把它连接到Item模型就可以了。我是否错误地声明了架构？我是否需要在mongo或其他东西中启动模型？

模型

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var listSchema = new Schema({
    name: { type: String, default: datestring + " List" }
});

mongoose.exports = mongoose.model('List', listSchema);

路线

app.get('/lists', function (req, res, err) {
    List.find(function (err, docs){ //THIS IS WHAT'S FAILING
        res.json(docs);
    });
});

调节器

angular.module('pickUp').controller('ListsCtrl', ['$scope', '$http', 'ngDialog', 'lists',

        function($scope, $http, ngDialog, lists) {

        $scope.lists = lists.lists;

    }]);

厂

angular.module('pickUp').factory('lists', ['$http',
    function($http){

        var lists = {
            lists: []
        };

        lists.getAll = function(){
            console.log("trying. . .");
            $http.get('/lists').success(function(res){
                angular.copy(res, lists.lists);
            });
        };

        return lists;
}]);

配置

$stateProvider
.state('/', {
    url: '/',
    templateUrl: 'views/lists.html',
    controller: 'ListsCtrl',
    resolve: {
        listPromise: ['lists', function (lists){
            return lists.getAll();
        }]

您的模块导出不正确

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var listSchema = new Schema({
    name: { type: String, default: datestring + " List" }
});

**mongoose.exports = mongoose.model('List', listSchema);** <!-- this is wrong -->

它应该是

**module.exports = mongoose.model('List', listSchema)**