如何在猫鼬中为深度人口查询选择字段

Question

我的查询如下图：

orderSubInfo.find({
    'order_id': {
        $in: orderArray
    }
}).populate({
    path: 'order_id',
    populate: {
        path: 'foodtruck_id',
        model: 'foodtruck'
    }
}).exec().then((info) => {
    res.json({
        status: '200',
        message: 'Your OTP',
        data: info
    })
}).catch((err) => {
    res.json({
        status: '500',
        message: 'Oops,something went wromg'
    })
});

现在发生的事情发生在 populate {path:foodtruck_id,model:'foodtruck} 之后。我得到了不必要的字段。但我只想 foodtruck_name,foodtruck_location 。那么我应该如何修改我的查询？

Answer 1

Select 仅您要包含的字段 (mongoose population):

populate: {
    path: 'foodtruck_id',
    model: 'foodtruck',
    select: 'foodtruck_name foodtruck_location' //to exclude _id add -_id
}

如何在猫鼬中为深度人口查询选择字段

How to have selective field for deep population query in mongoose

mongoose

mongoose-populate

mongoose-schema