node.js - Mongodb $geonear 从加入两个集合：计算坐标距离

Question

我们有 mongodb 集合

1. 用户

{ 
    _id: "1", 
    location: { coordinates: [ -63, 42 ], type: "Point" },
    name: "user one"
},
{ 
    _id: "2", 
    location: { coordinates: [ -83, 52 ], type: "Point" },
    name: "user two"
}
{ 
    _id: "3", 
    location: { coordinates: [ -53, 92 ], type: "Point" },
    name: "user three"
}

2. 用户连接

{ 
    _id: "1", 
    connect1: "1", // ref: 'users'
    connect2: "2" // ref: 'users'
},
{ 
    _id: "2", 
    connect1: "1", // ref: 'users'
    connect2: "3" // ref: 'users'
},

现在我们需要一个用户的所有连接。例如用户一 也有距离。所以结果会像

{ 
    connect1: { user one details from users },
    connect2: { user two details from users }.
    distance: 10
},
{ 
    connect1: { user one details from users },
    connect2: { user three details from users }.
    distance: 14
},

所以你能不能在这里帮助编写一个查询来使用 Mongodb $geonear 获取上面的数据。