From fecab79bbab71b4604aabcfa30c204206a021eb1 Mon Sep 17 00:00:00 2001
From: Edward Betts <edward@4angle.com>
Date: Sun, 29 Sep 2019 08:33:52 +0100
Subject: [PATCH] Fix handling of item with 'no value' artist.

---
 templates/item.html | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/templates/item.html b/templates/item.html
index 3a5e578..bba9c4c 100644
--- a/templates/item.html
+++ b/templates/item.html
@@ -43,8 +43,12 @@
           <div>
           <strong>{{ prop_label }}</strong>:
           {% for claim in claims %}
-            {% set claim_qid = claim.mainsnak.datavalue.value.id %}
-            <a href="https://www.wikidata.org/wiki/{{ claim_qid }}">{{ other[claim_qid] or '[ label missing ]' }}</a> ({{ claim_qid }})
+            {% if 'datavalue' in claim.mainsnak %}
+              {% set claim_qid = claim.mainsnak.datavalue.value.id %}
+              <a href="https://www.wikidata.org/wiki/{{ claim_qid }}">{{ other[claim_qid] or '[ label missing ]' }}</a> ({{ claim_qid }})
+            {% else %}
+              <i>no value</i>
+            {% endif %}
           {% endfor %}
           </div>
         {% endif %}