From e6758f1f37c2a6f06a7620fe65750cdaa5acb7e6 Mon Sep 17 00:00:00 2001
From: Jason Sun <jason.z.sun@qq.com>
Date: Wed, 28 Mar 2018 09:20:48 +0800
Subject: [PATCH 1/2] Update base.py

fix bug that it throws exception when some field not exists in context.
---
 microtemplates/base.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/microtemplates/base.py b/microtemplates/base.py
index 15b3c69..947b852 100644
--- a/microtemplates/base.py
+++ b/microtemplates/base.py
@@ -66,7 +66,10 @@ def resolve(name, context):
         name = name[2:]
     try:
         for tok in name.split('.'):
-            context = context[tok]
+            if tok in context:
+                context = context[tok]
+            else:
+                return None
         return context
     except KeyError:
         raise TemplateContextError(name)

From 045401d25539b013a18213e12f7ad856e2a14f88 Mon Sep 17 00:00:00 2001
From: Jason Sun <jason.z.sun@qq.com>
Date: Wed, 28 Mar 2018 09:27:22 +0800
Subject: [PATCH 2/2] Update tests.py

append a test case for testing some missing field syntax in IF command.
---
 microtemplates/tests.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/microtemplates/tests.py b/microtemplates/tests.py
index 1f62515..8452a5c 100644
--- a/microtemplates/tests.py
+++ b/microtemplates/tests.py
@@ -68,6 +68,10 @@ def test_truthy_thingy(self):
         self.assertEquals(rendered, '')
         rendered = Template('{% if items %}we have items{% end %}').render(items=[1])
         self.assertEquals(rendered, 'we have items')
+        
+    def test_some_field_does_not_exist(self):
+        rendered = Template('{% if context.has_flag %}we have items{% else %}we have nothing{% end %}').render(context={"items":[1,2]})
+        self.assertEquals(rendered, 'we have nothing')
 
 
 def pow(m=2, e=2):
@@ -96,4 +100,4 @@ def test_keyword_args(self):
 
 
 if __name__ == '__main__':
-    unittest.main()
\ No newline at end of file
+    unittest.main()