如何在MongoDB中将字符串转换为数组？

Question

当对象的类型被更改时，我陷入了困境。

如何转换：

{ 
"_id" : NumberLong(257),
"address" : "street  Street, house 50, appartment 508, floor 5"
}

对此：

{ 
"_id" : NumberLong(257),
 "userAddressList" : [{
        "street" : "Street",
        "house" : "50",
        "building" : "",
        "appartment " : NumberLong(508),
        "entrance" : NumberLong(0),
        "floor" : NumberLong(5),
        "intercom" : ""
    }]
}

使用 mongo shell？

我需要转换大约350个词条，希望脚本能完成。

Answer 1

你可以试试这个：

db.collection.find().forEach( function (x) {   
    lines = x.address.split(",");
    obj = {};
    userAddressList = [];
    lines.forEach( function (address){
        addressArray = address.replace(/^\s\s*/, '').replace(/\s\s*$/, '').split(" ");
        obj[addressArray[0]] = !isNaN(parseInt(addressArray[1])) ? parseInt(addressArray[1]) : addressArray[1];        
    });
    obj.building = "";
    obj.intercom = "";
    userAddressList.push(obj);
    x.userAddressList = userAddressList; // convert field to string
    db.collection.save(x);
});

Answer 2

你可以像这样在更新中使用 foreach

db.test.find( { } ).forEach( 函数 (x) {<br> x.userAddressList = x.address.split(" "); db.test.save(x); });

如何在MongoDB中将字符串转换为数组？

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