Ich habe versucht, ein benutzerdefiniertes Template-Tag zu schreiben, um die Links etwas zu verkürzen. Ich habe den Code und den Fehler angehängt, die ich unten erhalten habe. Ich habe versucht, in die Dokumentation von Django zu schauen, kann aber nicht erkennen, was ich falsch mache.

Ich habe meinen Templatetag in das folgende Layout eingefügt:

scribbler/
    models.py
    templatetags/
        __init__.py
        shortenlink.py
    views.py

Die benutzerdefinierte Tag-Datei, die ich geschrieben habe:

shortlink.py

from django import template
from django.conf import settings
from urllib import urlencode
from urllib2 import urlopen

register = template.Library()

@register.simple_tag
def bitlyshort(the_url):
    endpoint = 'https://api-ssl.bitly.com/v3/shorten?access_token={0}&longUrl={1}&format=txt'
    req = urlencode(endpoint.format(settings.ACCESS_KEY, the_url))
    return urlopen(req).read()

Teil der Vorlage, die das Template-Tag verwendet:

Vorlage

{% load shortenlink %}
<p>{{ bitlyshort "http://www.google.com" }}</p>

Error

TemplateSyntaxError at /user/sankaetp/
Could not parse the remainder: ' "http://www.google.com"' from 'bitlyshort "http://www.google.com"'
Request Method: GET
Request URL:    http://localhost:8000/user/sankaetp/
Django Version: 1.4.1
Exception Type: TemplateSyntaxError
Exception Value:    
Could not parse the remainder: ' "http://www.google.com"' from 'bitlyshort "http://www.google.com"'
Exception Location: /Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/django/template/base.py in __init__, line 563
Python Executable:  /Users/sankaetp/virtualenvs/myproject/bin/python
Python Version: 2.7.3
Python Path:    
['/Users/sankaetp/virtualenvs/myproject/bin/django_worksquid',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/pip-1.1-py2.7.egg',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/djangoembed-0.1.1-py2.7.egg',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/httplib2-0.7.4-py2.7.egg',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/BeautifulSoup-3.2.1-py2.7.egg',
 '/Users/sankaetp/virtualenvs/myproject/lib/python27.zip',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/plat-darwin',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/plat-mac',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/lib-tk',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/lib-old',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/lib-dynload',
 '/Users/sankaetp/.pythonbrew/pythons/Python-2.7.3/lib/python2.7',
 '/Users/sankaetp/.pythonbrew/pythons/Python-2.7.3/lib/python2.7/plat-darwin',
 '/Users/sankaetp/.pythonbrew/pythons/Python-2.7.3/lib/python2.7/lib-tk',
 '/Users/sankaetp/.pythonbrew/pythons/Python-2.7.3/lib/python2.7/plat-mac',
 '/Users/sankaetp/.pythonbrew/pythons/Python-2.7.3/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages',
 '/Users/sankaetp/virtualenvs/myproject/lib/python2.7/site-packages/PIL']
Server time:    Sun, 26 Aug 2012 18:54:26 -0500