字符串转换为数组在MongoDB中？ [英] Convert string to array in Mongodb?

问题描述

在蒙戈，我需要字段转换是这样的：

In Mongo, I need to convert fields like this:

音素：JH OY1 N个Z，

成这样的阵列

"phonemes" : [ 
    "JH", 
    "OY1", 
    "N", 
    "Z"
]

我发现了一些code <一个href=\"http://blog.physalix.com/datas-manipulation-in-mongodb-rename-field-change-type-add-sub-document/\"相对=nofollow>这里这将字符串转换到一个数组，但它是我的目的，有点太简单，只有要创建一个单独的数组元素。

I found some code here which converts a string into an array, but it's a bit too simple for my purposes as there is only a single array element to be created.

db.members.find().snapshot().forEach( function (x) {
   x.photos = [{"uri": "/images/" + x.photos}];
   db.members.save(x);
 });

时提供给我整个JavaScript语言从蒙戈外壳语句中？

Is the entire javascript language available to me from within mongo shell statements?

推荐答案

比我想象的要容易得多。只需使用JavaScript分裂功能。轰！

Much easier than I thought. Just use JavaScript split function. boom!

db.temp.find().snapshot().forEach( function (el) {
el.phonemes = el.phoneme.split(' ');
db.temp.save(el);
});

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