From fa8e4ecc0cece57b3f7fdb5dc77bc28d274c86e1 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 3 Dec 2018 20:51:34 -0800
Subject: fix empty ISSN bug (container view)

---
 python/fatcat/templates/container_view.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/fatcat/templates/container_view.html b/python/fatcat/templates/container_view.html
index ad4905f8..8f1d0c8b 100644
--- a/python/fatcat/templates/container_view.html
+++ b/python/fatcat/templates/container_view.html
@@ -56,10 +56,10 @@ Raw Object:
 {% if container.issnl != None %}
   <b>ISSN-L<sup><a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number#Linking_ISSN">?</a></sup></b> 
   &nbsp;<code>{{ container.issnl }}</code>
-  {% if container.extra != None and (container.extra.ISSNp|length > 0) %}
+  {% if container.extra != None and container.extra.ISSNp != None and (container.extra.ISSNp|length > 0) %}
     <br><i class="icon paperclip"></i>Print: &nbsp;<code>{{ container.extra.ISSNp }}</code>
   {% endif %}
-  {% if container.extra != None and (container.extra.ISSNe|length > 0) %}
+  {% if container.extra != None and container.extra.ISSNe != None and (container.extra.ISSNe|length > 0) %}
     <br><i class="icon plug"></i>Electronic: &nbsp;<code>{{ container.extra.ISSNe }}</code>
   {% endif %}
   </div><div class="ui segment attached">
-- 
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