Meteor Rendering Templates with Functions

I have a game and I want a system that renders a template if they have any adventures left.

Meteor.methods({


  adventure: function () {
    if(Meteor.user().adv > 0)
    {
    Meteor.users.update({_id: this.userId}, {$inc: {'adv': -1 }}); 
    this.render('adv');
    }
    else
    {
    this.render('noadventures');
    }
  },      
})

I have a template named adv but It wont load..

Use Blaze.render or Blaze.renderWithData - like so:

Meteor.methods({


  adventure: function () {
    if(Meteor.user().adv > 0)
    {
    Meteor.users.update({_id: this.userId}, {$inc: {'adv': -1 }}); 
       Blaze.render(Template.adv, $('body').get(0);
    }
    else
    {
       Blaze.render(Template.noadventures, $('body').get(0);
    }
  },      
})

You can do more with this - the documentation is pretty good.