Meteor example remove-all via client-side javascript

// http://leaderboard2.meteor.com/
//
// client-side js to clear the Players database from mongodb
//

// simple remove-all operation not permitted by untrusted client, i.e. Players.remove({});

// fetch all the records. inefficient but works for small databases.  better to iterate using cursor.
var players = Players.find({}).fetch();

for (p in players) {
  // remove by _id is permitted
  Players.remove({_id: players[p]._id});
}