Bugfix: Methods returning False or None are not rendered

HISTORY.md

@@ -1,5 +1,6 @@
 ## 0.2.0 (2009-??-??)
 
+* Bugfix: Methods returning False or None are not rendered
 * Add support for using non-callables as View attributes. [joshthecoder]
 * Allow using View instances as attributes. [joshthecoder]
 

examples/simple.mustache

@@ -1 +1 @@
-Hi {{thing}}!
+Hi {{thing}}!{{blank}}

examples/simple.py

@@ -5,3 +5,6 @@ class Simple(pystache.View):
 
     def thing(self):
         return "pizza"
+
+    def blank(self):
+        pass

pystache/template.py

@@ -94,7 +94,7 @@ def render_tags(self, template, context):
     @modifier(None)
     def render_tag(self, tag_name, context):
         """Given a tag name and context, finds, escapes, and renders the tag."""
-        return cgi.escape(str(context.get(tag_name, '')))
+        return cgi.escape(str(context.get(tag_name, '') or ''))
 
     @modifier('!')
     def render_comment(self, tag_name=None, context=None):

tests/test_pystache.py

@@ -20,6 +20,11 @@ def test_even_less_basic(self):
         ret = pystache.render(template, { 'name': 'Jon', 'thing': 'racecar' })
         self.assertEquals(ret, "I think Jon wants a racecar, right Jon?")
 
+    def test_ignores_misses(self):
+        template = "I think {{name}} wants a {{thing}}, right {{name}}?"
+        ret = pystache.render(template, { 'name': 'Jon' })
+        self.assertEquals(ret, "I think Jon wants a , right Jon?")
+
     def test_comments(self):
         template = "What {{! the }} what?"
         ret = pystache.render(template)