Working code for update

babies_controller.rb

  def update
    # @baby = Baby.find(params[:id])
    
    if @baby.update_attributes(params[:baby])
      if @baby.previous_changes[:notify]
        redirect_to root_url, notice: "Done"
      else
        redirect_to(root_url(:host => with_subdomain(@baby.subdomain)), :notice => 'Your baby was successfully updated and everyone has been told the good news.')
      end
    else
      render :action => "edit" 
    end
  end

I found that the baby definition at the start would do funny things because I'm using individual subdomains for each baby.