Reprise des enfants et parents dans le static des catégories d'actualités (#2291)

* Fix

* better

app/models/concerns/as_localized_tree.rb

@@ -23,6 +23,7 @@ module AsLocalizedTree
   end
 
   def parent
+    return if about.parent.nil?
     about.parent.localization_for(language)
   end
 

app/views/admin/communication/websites/posts/categories/static.html.erb

@@ -12,6 +12,21 @@ category = @l10n.about
             full_width: true,
             toc_offcanvas: true %>
 position: <%= category.position %>
+<% 
+if @l10n.parent
+  hugo = @l10n.parent.hugo(@website)
+  %>
+parent: "<%= hugo.path %>"
+<% end %>
+<% if @l10n.children.any? %>
+children:
+<% 
+@l10n.children.ordered.each do |child|
+  hugo = child.hugo(@website)
+  %>
+  - <%= hugo.path %>
+<% end %>
+<% end %>
 <%= render 'admin/application/l10n/static', about: @l10n %>
 <%= render 'admin/application/featured_image/static', about: @l10n %>
 <%= render 'admin/application/meta_description/static', about: @l10n %>