Flow Router不支持ObjectID。 任何修复？

Question

I'm trying to build routes in my Meteor app. Routing works perfectly fine but getting information from db with route path just doesn't work. I create my page specific routes with this:

FlowRouter.route('/level/:id'...

This route takes me to related template without a problem. Then I want to get some data from database that belong to that page. In my template helpers I get my page's id with this:

var id = FlowRouter.getParam('id');

This gets the ObjectID() but in string format. So I try to find that ObjectID() document in the collection with this:

Levels.findOne({_id: id});

But of course documents doesn't have ObjectIDs in string format (otherwise we wouldn't call it "object"id). Hence, it brings an undefined error. I don't want to deal with creating my own _id s so is there anything I can do about this?

PS: Mongo used to create _id s with plain text. Someting like I would get with _id._str now but all of a sudden, it generates ObjectID() . I don't know why, any ideas?

Answer 1

MongoDB used ObjectIds as _id s by default and Meteor explicitly sets GUID strings by default.

Perhaps you inserted using a meteor shell session in the past and now used a mongo shell/GUI or a meteor mongo prompt to do so, which resulted in ObjectId s being created.

If this happens in a development environment, you could generate the data again.

Otherwise, you could try to generate new _id s for your data using Meteor.uuid() .

If you want to use ObjectId as the default for a certain collection, you can specify the idGeneration option to its constructor as 'MONGO' .

If you have the string content of an ObjectId and want to convert it, you can issue

let _id = new Mongo.ObjectID(my23HexCharString);