Node.js 在MongoDB文档集合中查找对象数组中的元素

我将Nodejs后端与MongoDB一起使用，以Mongoose作为ORM保存我的对象结构。

我有一个工单对象，它遵循以下模式。生成的工单有数千份，我需要查找在给定日期分配给给定员工的工单。

你能帮我提出一个查找问题吗

查询详细信息

应该能够查询和查找给定工人在给定日期的年度分配工单详细信息

需要使用

allocatedWorker

（worker）和

allocatedDateTime

（日期和时间）来匹配和查找

工单

对象

{
    customer:       String,
    address:        String,
    /**
     * List of to do items. Each item will mainly belong in to a given category
     * and a collection of tasks.
     * The task can be system generated, admin assigned or customer raised.
     */
    todo: [
        {
            category: String,

            /**
             * A collection of raised tasks
             */
            tasks: [
                {
                    /**
                     * Holds the customer request details
                     */
                    request: {
                        workItem:           String,
                        instructions:       String,

                        /**
                         * Preferred date and time
                         */
                        dateTime:           String,
                        /**
                         * Preferred worker if any
                         */
                        preferredWorker:    String,
                        receivedDateTime:   String
                    },

                    /**
                     * Details of the schedule
                     */
                    schedule: [
                        {
                            /**
                             * Allocated worker's user name
                             */
                            allocatedWorker:    String,
                            allocatedDateTime:  String,
                            allocatedDuration:  Number,
                            /**
                             * Schedule changed date and time
                             */
                            scheduledOn:        String,
                            /**
                             * Scheduler's user name
                             */
                            scheduledBy:        String,
                            /**
                             * Scheduled task status
                             *  0: Pending - new
                             *  1: Scheduled - allocated
                             *  2: Work In Progress
                             *  3: Completed
                             *  4: Overdue
                             */
                            itemStatus:         Number
                        }
                    ],

                    /**
                     * Stage of the work order
                     *  0: Pending - new
                     *  1: Scheduled - allocated
                     *  2: Work In Progress
                     *  3: Completed
                     *  4: Overdue
                     */
                    status:                 Number
                }
            ]
        }
    ]
}

请尝试以下查询：

Workorder.find({'todo.tasks.schedule.allocatedWorker'‌​: worker, 
'todo.tasks.schedule.allocatedDateTime': day}, function(err, orders) {});

---

请记住，两者都将进行存储在db中的精确值匹配（精确名称和日期时间）。

这是我尝试过的，

Workorder.find（{$and:[{'todo.tasks.schedule.allocatedWorker'：worker}，{'todo.tasks.schedule.allocatedDateTime'：day}]}，函数（err，orders）{}