diff --git a/app/models/post.rb b/app/models/post.rb
index 3a1dcd12..62230420 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -60,11 +60,11 @@ class Post < OpenStruct
     end
 
     # TODO: Llamar dinámicamente
-    load_lang!
-    load_slug!
+    load_lang! args[:lang]
+    load_uuid! args[:uuid]
     load_date!
+    load_slug!
     load_path!
-    load_uuid!
 
     # XXX: No usamos Post#read porque a esta altura todavía no sabemos
     # nada del Document
@@ -372,18 +372,18 @@ class Post < OpenStruct
                                  required: true)
   end
 
-  def load_lang!
+  def load_lang!(lang = nil)
     self.lang = MetadataLang.new(document: document, site: site,
                                  layout: layout, name: :lang,
                                  type: :lang, post: self,
-                                 required: true)
+                                 value: lang, required: true)
   end
 
-  def load_uuid!
+  def load_uuid!(uuid = nil)
     self.uuid = MetadataUuid.new(document: document, site: site,
                                  layout: layout, name: :uuid,
                                  type: :uuid, post: self,
-                                 required: true)
+                                 value: uuid, required: true)
   end
 
   # Ejecuta la acción de guardado en cada atributo