From: Stephen Burrows <stephen.r.burrows@gmail.com>
Date: Wed, 17 Nov 2010 18:51:13 +0000 (-0500)
Subject: Added {% include_string %} tag to allow passing of context from templates to template... 
X-Git-Tag: philo-0.9~25^2^2
X-Git-Url: http://git.ithinksw.org/philo.git/commitdiff_plain/cb63c59effc15adf1952276ca2585643835b7435

Added {% include_string %} tag to allow passing of context from templates to template code from arbitrary sources (such as a NewsletterArticle).
---

diff --git a/templatetags/include_string.py b/templatetags/include_string.py
new file mode 100644
index 0000000..260dcff
--- /dev/null
+++ b/templatetags/include_string.py
@@ -0,0 +1,38 @@
+from django import template
+from django.conf import settings
+
+
+register = template.Library()
+
+
+class IncludeStringNode(template.Node):
+	"""The passed variable is expected to be a string of template code to be rendered with
+	the current context."""
+	def __init__(self, string):
+		self.string = string
+	
+	def render(self, context):
+		try:
+			t = template.Template(self.string.resolve(context))
+			return t.render(context)
+		except template.TemplateSyntaxError:
+			if settings.TEMPLATE_DEBUG:
+				raise
+			return settings.TEMPLATE_STRING_IF_INVALID
+		except:
+			return settings.TEMPLATE_STRING_IF_INVALID
+
+
+def do_include_string(parser, token):
+	"""
+	Include a flat string by interpreting it as a template.
+	{% include_string <template_code> %}
+	"""
+	bits = token.split_contents()
+	if len(bits) != 2:
+		raise TemplateSyntaxError("%r tag takes one argument: the template string to be included" % bits[0])
+ 	string = parser.compile_filter(bits[1])
+	return IncludeStringNode(string)
+
+
+register.tag('include_string', do_include_string)
\ No newline at end of file