implement getitem so jinja cleanly propagates undefined values during…

… parsing
dbt-labs · Oct 23, 2018 · 045783e · 045783e
1 parent 15ae37a
commit 045783e
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/dbt/clients/jinja.py b/dbt/clients/jinja.py
@@ -222,6 +222,11 @@ def __deepcopy__(self, memo):
                 .format(self.node.get('package_name'), self.node.get('name'))
             )
 
+        def __getitem__(self, name):
+            # Propagate the undefined value if a caller accesses this as if it
+            # were a dictionary
+            return self
+
         def __getattr__(self, name):
             if name == 'name' or _is_dunder_name(name):
                 raise AttributeError(