Add catch for non JSON serializable objects and don't show the EXPLAIN link for

these.

1 files changed, 5 insertions, 1 deletions

diff --git a/debug_toolbar/templates/debug_toolbar/panels/sql.html b/debug_toolbar/templates/debug_toolbar/panels/sql.html
index 0a8a6e0..052b36a 100644
--- a/debug_toolbar/templates/debug_toolbar/panels/sql.html
+++ b/debug_toolbar/templates/debug_toolbar/panels/sql.html
@@ -11,7 +11,11 @@
 		{% for query in queries %}
 			<tr class="{% cycle 'row1' 'row2' %}">
 				<td>{{ query.time|floatformat:"4" }}</td>
-				<td><a class="remoteCall" href="/__debug__/sql_explain/?sql={{ query.raw_sql|urlencode }}&params={{ query.params|urlencode }}&time={{ query.time|floatformat:"4"|urlencode }}">EXPLAIN</a></td>
+				<td>
+				{% if query.params %}
+					<a class="remoteCall" href="/__debug__/sql_explain/?sql={{ query.raw_sql|urlencode }}&params={{ query.params|urlencode }}&time={{ query.time|floatformat:"4"|urlencode }}">EXPLAIN</a>
+				{% endif %}
+				</td>
 				<td class="syntax">{{ query.sql|safe }}</td>
 			</tr>
 		{% endfor %}