Action View Resolver -- Company scoped

cars_controller.rb

class CarsController < ApplicationController

  def index
    @user = load_user # Load the user
    prepend_view_path @user.resolver # Get the resolver
  end

end

company.rb

class User < ActiveRecord::Base
  attr_accessible :name
  has_many :message_templates, dependent: :destroy

  def resolver
    # get an action view resolver for the itself # perhaps move this to a helper?
    @resolver ||= UserViewResolver.new(self)
  end

end

company_view_resolver.rb

class UserViewResolver < ActionView::Resolver

  attr_accessor :document, :user

  def initialize(user)
    @user = user
    super()
  end

  def find_templates(name, prefix, partial, details)
    search_args = details.merge({ :name => name, :prefix => prefix, :partial => partial, :user_id => user.id })
    MessageTemplate.where(search_args).all.map do |d|
      ActionView::Template.new(*template_args(d))
    end
  end

  def template_args(document)
    args = [document.source]
    args << "view_template-#{document.id}-#{document.prefix}-#{document.name}"
    args << ::ActionView::Template.registered_template_handler(document.handlers)
    args << { :format => Mime[document.formats], :virtual_path => virtual_path(document) }
  end

  def virtual_path(document)
    virtual = "#{document.prefix.to_s}/"
    virtual << "_" if document.partial
    virtual << document.name.to_s
  end
end

message_template.rb

class MessageTemplate < ActiveRecord::Base
  belongs_to :user
  attr_accessible :formats, :handlers, :locale, :name, :partial, :prefix, :source
end