fix problem with invalid maintainer list

3 files changed, 12 insertions, 1 deletions

diff --git a/render.py b/render.py
index 47c187f..6e49a21 100644
--- a/render.py
+++ b/render.py
@@ -5,6 +5,7 @@ import os
 import jinja2
 import optparse
 from utils import filters
+from utils import tests
 
 class Renderer:
     def __init__(self, output_dir):
@@ -14,6 +15,7 @@ class Renderer:
         self.env = jinja2.Environment(
             loader = jinja2.FileSystemLoader(template_dir))
         self.env.filters.update(filters)
+	self.env.tests.update(tests)
         self.output_dir = output_dir
         self.templates = {}
 
diff --git a/templates/host.html b/templates/host.html
index d59c05d..09c4f9d 100644
--- a/templates/host.html
+++ b/templates/host.html
@@ -33,7 +33,7 @@
       {% if vserver_host %}
       <dt>vserver_host</dt><dd>{{vserver_host}}</dd>
       {% endif %}
-      {% if maintainers is defined %}
+      {% if maintainers is iterable %}
       <dt>maintainers</dt>
       <dd>
         {% for maintainer in maintainers %}
diff --git a/utils.py b/utils.py
index 1ba7137..1a222c8 100644
--- a/utils.py
+++ b/utils.py
@@ -1,4 +1,5 @@
 #!/usr/bin/python2
+import collections
 
 def get_os_name(name):
   try: return name.split(' ')[0].lower()
@@ -7,8 +8,16 @@ def get_os_name(name):
 def select_with_attribute(iterable, attribute, result=True):
     return [value for value in iterable if (attribute in value) == result]
 
+def is_iterable(obj):
+    if isinstance(obj, collections.Iterable):
+       return True
+    return False
 
 filters = [
     ('select_with_attribute', select_with_attribute),
     ('get_os_name', get_os_name)
 ]
+
+tests = [
+    ('iterable', is_iterable)
+]