Fix display history for operation

1 files changed, 16 insertions, 0 deletions

diff --git a/ishtar_common/templatetags/ishtar_helpers.py b/ishtar_common/templatetags/ishtar_helpers.py
index 51f5e722e..282f35521 100644
--- a/ishtar_common/templatetags/ishtar_helpers.py
+++ b/ishtar_common/templatetags/ishtar_helpers.py
@@ -18,6 +18,22 @@ def and_(value1, value2):
 
 
 @register.filter
+def safe_or(item, args):
+    if not item:
+        return False
+    for arg in args.split("|"):
+        result = True
+        current_item = item
+        for sub in arg.split("."):
+            if not hasattr(current_item, sub) or not getattr(current_item, sub):
+                result = False
+                break
+            current_item = getattr(current_item, sub)
+        if result:
+            return True
+
+
+@register.filter
 def file_content(value):
     if value:
         return mark_safe(value.read())