diff --git a/app/models/post_relation.rb b/app/models/post_relation.rb
index ba13785..1e5c528 100644
--- a/app/models/post_relation.rb
+++ b/app/models/post_relation.rb
@@ -115,6 +115,14 @@ class PostRelation < Array
     end]
   end
 
+  # Como Array#select devolviendo una relación
+  #
+  # @return [PostRelation]
+  alias array_select select
+  def select(&block)
+    PostRelation[*array_select(&block)]
+  end
+
   # Intenta guardar todos y devuelve true si pudo
   def save_all(validate: true)
     map do |post|