使用Mongoose和Node.js在数组中查找特定对象

I am trying to return a specific object in an array with mongoose. My document is as follows:

我试图用mongoose返回数组中的特定对象。我的文件如下:

{
"_id": {
    "$oid": "577a9345ba1e2a1100624be7"
},
"name": "John Doe",
"password": "$2a$10$NzqAqxTRy8XLCHG8h3Q7IOLBSFCfBJ7R5JqHy1XHHYN.1h074bWJK",
"__v": 0,
"birthDate": "14.07.2016",
"academic": [
    {
        "about": "asdfasdf",
        "to": "asdf",
        "from": "asfdasdf",
        "institute": "asdfasdf",
        "qualification": "asdfasdf",
        "_id": {
            "$oid": "579111b3e68d489f1ff8b6dc"
        }
    }
]

}

I want to return that academic object in the list. I am passing in the institute name into the route my code is as follows:

我想在列表中返回该学术对象。我将学院名称传递给我的代码如下:

    getAcademicInstituteByName: function(req, name, cb){
    User.findById(req.user.id, function (err, user) {
        if(err) throw err;
        if(user){
            academic = user.academic.institute(name);
            return cb(null, academic);
        }
    });

But this is not working since I am getting an error saying user.academic.institute is not a function. Any help would be greatly appreciated

但这不起作用,因为我收到一个错误,说user.academic.institute不是一个函数。任何帮助将不胜感激

2 个解决方案

#1

user.academic.institute is an array, so you can use regular array operations to find the entry you're interested in:

user.academic.institute是一个数组,因此您可以使用常规数组操作来查找您感兴趣的条目:

var academic = user.academic.institute.filter(i => i.institute === name)
                                      .pop();
return cb(null, academic);

#2

 academic = user.academic.institute;

this should work, though I haven't tested it.

这应该工作,虽然我还没有测试过。

#1