Mongodb 如何在Meteor中动态指定集合文件名？

我现在有这些代码：

OneCollection.find({}, {fields: {'oneFiled.child1': 1}});
OneCollection.find({}, {fields: {'oneFiled.child2': 1}});

但我想给出一个动态的子文件名

let childfield = "child1";
OneCollection.find({}, {fields: {'oneFiled.childfield': 1}});  // How to write this one?

如何动态地给出文件名？谢谢

使用构建字段对象，如下所示：

var childfield = "child1",
    options = { fields: {} };

options["field"]["oneField."+childfield] = 1;
OneCollection.find({}, options); 

像这样

let childField = 'child1';
let listFields = {};
listFields['oneField.'+childField]=1;
OneCollection.find({}, {fields: listFields });

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@洪伯淼：谢谢你的关注：）谢谢，@chridam，你和阿帕兹的方式都很完美！