[djmashko2]

Database modifications on the client are usually disabled in Meteor. There are two ways to control database access in Meteor:

1. You can write allow/deny permissions rules to allow only certain modifications: http://docs.meteor.com/#/basic/Mongo-Collection-allow

2. You can not use client-side modifications at all and instead write all of your database code inside Methods, which are basically supercharged RPCs that give you automatic optimistic UI updates: https://www.meteor.com/try/10

I think this issue comes up a lot because new Meteor apps come with the "insecure" package by default to enable faster initial development and debugging, but most or all production apps will remove this package.

(I work at Meteor)