ruby on rails - Implementing RefineryCMS search engine -

i'm trying implement refinerycms search engine, have followed steps on guide https://github.com/refinery/refinerycms-search#search-plugin-for-refinery-cms, i'm implementing on custom extension, might missing something:

application.rb:

config.to_prepare   refinery.searchable_models = [refinery::doctors::doctor] end 

model:

module refinery   module doctors     class doctor < refinery::core::basemodel       self.table_name = 'refinery_doctors'        attr_accessible :prefix, :full_name, :bio, :specialty, :branch, :schedule, :location, :position, :dr_img, :dr_img_id        acts_as_indexed :fields => [:prefix, :full_name, :bio, :specialty, :branch, :schedule, :location, :dr_img, :dr_img_id]       alias_attribute :title, :full_name        validates :prefix, :presence => true       belongs_to :dr_img, :class_name => '::refinery::image'       has_many :branches     end   end end 

controller:

  def show      # can use meta fields model instead (e.g. browser_title)     # swapping @page @doctor in line below:     present(@page)   end  protected    def find_all_doctors     @doctors = doctor.order('branch asc').paginate(:page => params[:page], :per_page => 20)    end 

view:

<div class="clearfix"> <div class="span3 dotted"> <% content_for :side_body %>   <aside>     <h2>otros especialistas<%#= t('.other') %></h2>        <% @doctors.each |doctor| %>         <% if @doctor.branch == doctor.branch && @doctor.full_name != doctor.full_name %>           <ul id="doctors">             <li>               <%= link_to doctor.prefix + ' ' + doctor.full_name, refinery.doctors_doctor_path(doctor) %>             </li>           </ul>          <% end %>     <% end %>   </aside> <% end %>  </div>      <div class="clearfix"> <% content_for :body %>   <section>         <div class="span3">                 <p><%= image_fu @doctor.dr_img, '250x250'%></p>         </div>          <div class="span4">       <h1><%= @doctor.prefix + ' ' + @doctor.full_name %></h1>       <h2><%= @doctor.specialty %></h2>         <strong>horario: </strong><%=raw @doctor.schedule %><br>         <strong>consultorio: </strong><%=raw @doctor.location %>         <h3>biografía:</h3>         <p>           <%=raw @doctor.bio %>         </p>           </div>    </section> <% end %>   <%= render '/refinery/content_page' %> </div> 

error:

https://gist.github.com/jmercedes/5503185

@doctor not defined anywhere in code. need add following line #show action in controller.

@doctor = doctor.find(params[:id])