!!! XML
%urlset{ xmlns: 'http://www.sitemaps.org/schemas/sitemap/0.9',
         'xmlns:xsi': 'http://www.w3.org/2001/XMLSchema-instance',
         'xsi:schemalocation': 'http://www.sitemaps.org/schemas/sitemap/0.9\n            http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd' }
  %url
    %loc= url_for(controller: :main, action: :index, only_path: false)
    %priority 1.0

  - project_url = url_for(controller: :project, action: :show, project: 'REPLACEIT', only_path: false)
  - @projects_names.each do |project_name|
    %url
      %loc= project_url.gsub('REPLACEIT', project_name)
      %priority 0.9
