templates_controller.rb

class TemplatesController < ApplicationController

  #
  # The template which is going to be destroyed is
  # last_accessed_template of current user. If
  # template is destroyed and updation fails, user
  # in the database will refenrence a destroyed template.
  # 
  # How to handle above situation?
  #
  # oficina7:
  # user has_many :templates; user belongs_to :template; template has_many :users; @user.template (may return nil) @user.template || Template.where(:is_default=>true).first (probably won't return nil)
  #
  # def template_or_default; template ||  Template.where(:is_default=>true).first; end;
  def destroy
    begin
      template = current_user.templates.find(params[:id])
      template.destroy
      current_user.update_attributes(:last_accessed_template => Template.default)
      respond_to do |format|
        format.xml { head :ok }
      end
    rescue ActiveRecord::RecordNotFound
      respond_to do |format|
        format.xml { render :xml => { :errors => { :error => { :description => "You can destroy only your templates." }}}.to_xml,
                            :status => :unauthorized }
      end
    end
  end
end