mongodb - 如何在 Meteor 中动态赋予集合文件名？

Question

我现在有这些代码：

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

但我想给一个动态的子文件名。

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

如何动态给出归档名称？谢谢

Answer 1

使用括号表示法构造字段对象，如下所示：

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

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

Answer 2

像这样 ？

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