Merge branch 'master' of ssh://git.planet-lab.org/git/plstackapi into observer3.0

[plstackapi.git] / planetstack / core / xoslib / templatetags / mustache.py

diff --git a/planetstack/core/xoslib/templatetags/mustache.py b/planetstack/core/xoslib/templatetags/mustache.py
new file mode 100644 (file)
index 0000000..a3b3b2a
--- /dev/null
+++ b/planetstack/core/xoslib/templatetags/mustache.py
@@ -0,0 +1,51 @@
+from django import template
+from django.conf import settings
+import pystache
+import os
+
+register = template.Library()
+
+class View(pystache.View):
+    template_path = settings.TEMPLATE_DIRS[0]
+
+    def __init__(self, template_dir, template_name, context):
+        self.template_path = template_dir
+        self.template_name = template_name
+        return super(View, self).__init__(context=context)
+
+class MustacheNode(template.Node):
+    def __init__(self, template_name, attr=None):
+        for template_dir in settings.TEMPLATE_DIRS:
+            if os.path.exists(os.path.join(template_dir, template_name) + ".mustache"):
+                break
+        else:
+            raise IOError("failed to find %s in %s" % (template_name, str(settings.TEMPLATE_DIRS)))
+
+        self.template_path = template_dir
+        self.template = template_name
+        self.attr = attr
+
+    def render(self, context):
+        mcontext = context[self.attr] if self.attr else {}
+        view = View(self.template_path, self.template, context=mcontext)
+        return view.render()
+
+def do_mustache(parser, token):
+    """
+    Loads a mustache template and render it inline
+    
+    Example::
+    
+    {% mustache "foo/bar" data %}
+    
+    """
+    bits = token.split_contents()
+    if len(bits) not in  [2,3]:
+        raise template.TemplateSyntaxError("%r tag takes two arguments: the location of the template file, and the template context" % bits[0])
+    path = bits[1]
+    path = path[1:-1]
+    attrs = bits[2:]
+    return MustacheNode(path, *attrs)
+
+
+register.tag("mustache", do_mustache)