customized company model __str__

companies/models.py

@@ -58,6 +58,14 @@ class Company(models.Model):
         verbose_name = "Compañía"
         verbose_name_plural = "Compañías"
 
+    def __str__(self):
+        if self.short_name:
+            return self.short_name
+        elif self.company_name:
+            return self.company_name
+        else:
+            return f"Compañía #{self.id}"
+
     def link(self):
         return self.shop_link is not None