Best way to update embedded document in mongoid

I migrate my project from mysql to m开发者_开发问答ongodb and have some troubles.

How to update attributes in embedded document in ActiveRecord way? It is possible in mongoid?

class Template
    include Mongoid::Document
    include Mongoid::Versioning

    embedded_in :site, :inverse_of => :templates
end

class Site
  embeds_many :templates
end

For example:

site = Site.find(params[:current_site_id])
template = site.templates.find(params[:id])

template.update_attributes(params[:template])

I got:

Access to the collection for Template is not allowed since it is an embedded document, please access a collection from the root document.

Ok, but how to do it from the root document?

Edit:

It looks like Mongoid::Versioning which I use in Template make some troubles. I remove included module and everything works fine.

There is a pb with mongoid's versioning with embedded documents, same goes if you are using paranoia mode. I would suggested deactivating those options for your embedded docs and replicating the functionality yourself if you really need it.

Alex