```ruby
class TravelAdviceController < ApplicationController
  before_filter :set_expiry

  def index
    @countries = content_api.countries['results']
    @publication = OpenStruct.new(:type => 'travel-advice')

    respond_to do |format|
      format.html
      format.json { redirect_to "/api/travel-advice.json" }
    end
  end

  def country
    @country = params[:country_slug].dup
    @edition = params[:edition]

    @publication, @artefact = fetch_artefact_and_publication_for_country(@country)
    set_slimmer_artefact_headers(@artefact)

    I18n.locale = :en # These pages haven't been localised yet.

    if params[:part].present?
      @part = @publication.find_part(params[:part])

      unless @part
        redirect_to travel_advice_country_path(@country) and return
      end
    end

    respond_to do |format|
      format.html { render "country" }
      format.atom { render "country" }
      format.print do
        set_slimmer_headers template: "print"
        render "country"
      end
    end
  rescue RecordNotFound
    set_expiry(10.minutes)
    error 404
  end

  private
    def fetch_artefact_and_publication_for_country(country)
      params[:slug] = "travel-advice/" + country

      artefact = fetch_artefact
      publication = PublicationPresenter.new(artefact)

      raise RecordNotFound unless publication
      return [publication, artefact]
    end
end
```

Remove redundant render calls from controller
user
```ruby
class TravelAdviceController < ApplicationController
  before_filter :set_expiry

  def index
    @countries = content_api.countries['results']
    @publication = OpenStruct.new(:type => 'travel-advice')

    respond_to do |format|
      format.html
      format.json { redirect_to "/api/travel-advice.json" }
    end
  end

  def country
    @country = params[:country_slug].dup
    @edition = params[:edition]

    @publication, @artefact = fetch_artefact_and_publication_for_country(@country)
    set_slimmer_artefact_headers(@artefact)

    I18n.locale = :en # These pages haven't been localised yet.

    if params[:part].present?
      @part = @publication.find_part(params[:part])

      unless @part
        redirect_to travel_advice_country_path(@country) and return
      end
    end

    respond_to do |format|
      format.html
      format.atom
      format.print do
        set_slimmer_headers template: "print"
      end
    end
  rescue RecordNotFound
    set_expiry(10.minutes)
    error 404
  end

  private
    def fetch_artefact_and_publication_for_country(country)
      params[:slug] = "travel-advice/" + country

      artefact = fetch_artefact
      publication = PublicationPresenter.new(artefact)

      raise RecordNotFound unless publication
      return [publication, artefact]
    end
end
```
assistant