--- a/sat_website/templatetags/utils.py	Wed Dec 09 03:01:48 2015 +0100
+++ b/sat_website/templatetags/utils.py	Thu Jan 14 23:39:43 2016 +0100
@@ -1,6 +1,9 @@
 from django import template
 from django.forms import RadioSelect, CheckboxInput
 from django.utils.translation import get_language, ugettext_lazy as _
+import urllib2
+import urlparse
+import re
 register = template.Library()
 
 @register.filter
@@ -106,3 +109,20 @@
     except AttributeError:
         pass
     return "(%s)" % ', '.join(items)
+
+@register.simple_tag
+def insert_blog_content(url):
+    # XXX: quick and dirty
+    url = url.encode("utf-8")
+    parse_result = urlparse.urlparse(url, "http")
+    base_url = urlparse.urljoin("%s://%s" % (parse_result.scheme, parse_result.netloc), "blog")
+    text = urllib2.urlopen(url).read()
+    subs = []
+    for match in re.finditer(r"(href=|src=)\"([^\"]*)\"", text):
+        if re.match("^[^:]*://", match.group(2)):  # keep absolute link
+            continue
+        # complete relative link
+        subs.append((match.group(0), match.group(1) + '"%s"' % urlparse.urljoin(base_url, match.group(2))))
+    for url, new_url in subs:
+        text = text.replace(url, new_url)
+    return text