如何使用Angular流星为MongoDB中的嵌套对象生成唯一的ID？

Question

So, I have the following code in my app.js:

Countries = new Mongo.Collection('countries');

// Some skipped code

$scope.addRegion = function(newRegion) {
  $scope.country.regions.push(
    {
      name: newRegion.name,
      createdAt: new Date()
    }
  );
};

This successfully adds a new region object in the array and is persistent in the database. Although it has no "_id" field.

How can I generate a unique id for each insertion? (and by unique, I mean unique in the database)

Answer 1

Use the random package - specifically Random.id . From the docs :

Returns a unique identifier, such as "Jjwjg6gouWLXhMGKW", that is likely to be unique in the whole world. The optional argument n specifies the length of the identifier in characters and defaults to 17.