Padrino switching multiple-laguages for same page

_language_links.slim

- EDIT_LOCALES.each do |locale|
  - lang_link = (defined?(@page_url) and not @page_url[locale].blank?) ? @page_url[locale] : url(:home, :index, locale: locale)
  li class='#{locale == I18n.locale ? 'active' : ''}'
    a href=lang_link
      = locale.to_s

application.slim

...
= partial 'home/language_links'
...

home_helper.rb

Src::EditArchitects.helpers do
  
  EDIT_LOCALES = [:cs, :en]
  
  def this_page_url(&url_block)
    original_locale = I18n.locale || I18n.defalut_locale
    page_url = {}
    
    EDIT_LOCALES.each do |locale|
      I18n.locale = locale
      page_url[locale] = url_block.call(locale)
    end
    
    I18n.locale = original_locale
    
    page_url
  end
  
end

project_category_helper.rb

Src::EditArchitects.helpers do
  def project_category_url(project_category, locale=nil)
    url(:project_category, :show, project_category_slug: project_category.slug, locale: locale)
  end
end

show.slim

- @page_url = this_page_url {|locale| project_category_url(@project_category, locale)}

...