Note there is only an index for this app: very simple. No form/edit/show anything like that (taken care of in the admin portion of the app).

listings_controller.rb

def index
  @listings = params[:search].nil? ? Listing.all : Listing.search(params[:search])
    respond_to do |format|
      format.js
      format.html
      format.json { render json: @listings }
    end
end