流星:通过_id从集合中查找对象 [英] Meteor: Finding an object from a collection by _id

问题描述

我正在尝试使用_id用流星查找对象.

I am trying to find an object by _id with Meteor.

这是我尝试过的:

Meteor.publish("gifts", function(gid) {
  console.log("Looking for "+ gid);
  var gifts = Gifts.find({_id: gid}).fetch();
  console.log("Result: " + gifts);
  return gifts;
});

这是输出:

寻找f1790caa-7a10-4af5-a01c-e80bb2c2fd55结果:

Looking for f1790caa-7a10-4af5-a01c-e80bb2c2fd55 Result:

如果我删除查询:

Meteor.publish("gifts", function(gid) {
  console.log("Looking for "+ gid);
  var gifts = Gifts.find().fetch()[1];
  console.log("Result:" + gifts._id);
  return gifts;
});

对象在数组中，_id与上面的相同.

The object is in the array, and the _id is the same as above.

寻找f1790caa-7a10-4af5-a01c-e80bb2c2fd55结果: f1790caa-7a10-4af5-a01c-e80bb2c2fd55

Looking for f1790caa-7a10-4af5-a01c-e80bb2c2fd55 Result: f1790caa-7a10-4af5-a01c-e80bb2c2fd55

此外，如果我在mongo控制台中执行查找，则会找到对象:

Also, if I execute the find in a mongo console, I find the object:

> db.gifts.find({_id: 'f1790caa-7a10-4af5-a01c-e80bb2c2fd55'});
{ "name" : "A new gift", "_id" : "f1790caa-7a10-4af5-a01c-e80bb2c2fd55" }

我在做什么错了?

推荐答案

您从何处插入文档? MongoDB对字符串和objectIds的处理方式不同，并且看来Meteor中当前存在一个错误，无法正确处理objectIds.

Where did you insert the document from? MongoDB treats strings and objectIds differently, and it looks like there is currently a bug in Meteor that does not handle objectIds correctly.

https://github.com/meteor/meteor/issues/61

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