From cc9c3a38b9f07d3c9379f8ee3cc536a579537025 Mon Sep 17 00:00:00 2001
From: f <f@sutty.nl>
Date: Thu, 25 Jun 2020 16:28:36 -0300
Subject: [PATCH] no fallar si el atributo no existe

fallaba al encontrar la licencia
---
 app/models/post_relation.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/models/post_relation.rb b/app/models/post_relation.rb
index 1071234..336c8bd 100644
--- a/app/models/post_relation.rb
+++ b/app/models/post_relation.rb
@@ -72,8 +72,11 @@ class PostRelation < Array
   # Encuentra el primer post por el valor de un atributo
   # XXX: Acepta cualquier atributo
   def find_by(**args)
+    attr = args.first.first
+
     find_generic do |p|
-      p.public_send(args.first.first).try(:value) == args.first.last
+      p.attribute?(attr) &&
+        p.public_send(attr).value == args.first.last
     end
   end