Added functionality for sitemap

Gemfile

@@ -10,3 +10,6 @@ gem 'tzinfo-data', platforms: [:mswin, :mingw, :x64_mingw, :jruby]
 
 # Include the tech docs gem
 gem 'govuk_tech_docs'
+
+
+gem "builder", "~> 3.0"

Gemfile.lock

@@ -12,6 +12,7 @@ GEM
     autoprefixer-rails (10.4.7.0)
       execjs (~> 2)
     backports (3.23.0)
+    builder (3.2.4)
     chronic (0.10.2)
     chunky_png (1.4.0)
     coffee-script (2.4.1)
@@ -183,6 +184,7 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
+  builder (~> 3.0)
   govuk_tech_docs
   tzinfo-data
   wdm (~> 0.1.0)

config.rb

@@ -15,4 +15,6 @@
 activate :basic_panel
 activate :back_to_top
 
+config[:host] = "https://apply-the-service-standard.education.gov.uk"
+
 GovukTechDocs.configure(self)

source/sitemap.txt.erb

@@ -0,0 +1 @@
+<% sitemap.resources.each do |page| %><%= "#{URI.join(config[:host], page.url)}\n" if page.url !~ /\.(css|js|eot|svg|woff|ttf|png|jpg|jpeg|gif|keep)$/ %><% end %>

source/sitemap.xml.builder

@@ -0,0 +1,16 @@
+xml.instruct!
+xml.urlset 'xmlns' => "http://www.sitemaps.org/schemas/sitemap/0.9" do
+  sitemap.resources.select { |page| page.destination_path =~ /\.html/ && page.data.noindex != true }.each do |page|
+    xml.url do
+      xml.loc URI.join(config[:host], page.destination_path)
+      last_mod = if page.path.start_with?('articles/')
+        File.mtime(page.source_file).to_time
+      else
+        Time.now
+      end
+      xml.lastmod last_mod.iso8601
+      xml.changefreq page.data.changefreq || "monthly"
+      xml.priority page.data.priority || "0.5"
+    end
+  end
+end