Merge pull request #2767 from SchrodingersGat/date-render-fix

Check for empty string when rendering dates

InvenTree/part/templatetags/inventree_extras.py

@@ -8,6 +8,7 @@ over and above the built-in Django tags.
 from datetime import date, datetime
 import os
 import sys
+import logging
 
 from django.utils.html import format_html
 
@@ -31,6 +32,9 @@ from plugin.models import PluginSetting
 register = template.Library()
 
 
+logger = logging.getLogger('inventree')
+
+
 @register.simple_tag()
 def define(value, *args, **kwargs):
     """
@@ -57,8 +61,19 @@ def render_date(context, date_object):
         return None
 
     if type(date_object) == str:
+
+        date_object = date_object.strip()
+
+        # Check for empty string
+        if len(date_object) == 0:
+            return None
+
         # If a string is passed, first convert it to a datetime
-        date_object = date.fromisoformat(date_object)
+        try:
+            date_object = date.fromisoformat(date_object)
+        except ValueError:
+            logger.warning(f"Tried to convert invalid date string: {date_object}")
+            return None
 
     # We may have already pre-cached the date format by calling this already!
     user_date_format = context.get('user_date_format', None)