Django Dev

Accept template tags in Django Flatpages

admin — Sun, 20 Jun 2010 18:23:00 +0000

You need to use template tags in Django FlatPages application ?

Here is a solution:

First create an evaluate_tag.py file in your templatetags directory with the following content:


[python]
from django import template

register = template.Library()

@register.tag(name="evaluate")
def do_evaluate(parser, token):
    """
    tag usage {% evaluate object.textfield %}
    """
    try:
        tag_name, variable = token.split_contents()
    except ValueError:
        raise template.TemplateSyntaxError, "%r tag requires a single argument" % token.contents.split()[0]
    return EvaluateNode(variable)

class EvaluateNode(template.Node):
    def __init__(self, variable):
        self.variable = template.Variable(variable)

    def render(self, context):
        try:
            content = self.variable.resolve(context)
            t = template.Template(content)
            return t.render(context)
        except template.VariableDoesNotExist, template.TemplateSyntaxError:
            return 'Error rendering', self.variable
[/python]

Next, modifiy your flatpages template file to use this template tag:

[html]

“http://www.w3.org/TR/REC-html40/loose.dtd”>

{{ flatpage.title }}

{% load evaluate_tag %}
{% evaluate flatpage.content %}

[/html]

Now, you can use template tags in your flatpages !

Django 1.2.1 – CSRF verification failed – 403 Error

admin — Tue, 08 Jun 2010 17:52:57 +0000

Here is the kind of error you can get while attempting to make a POST request after migrating to Django 1.2.1:

403 Forbidden
CSRF verification failed. Request aborted. Help
Reason given for failure:
CSRF cookie not set.

To correct this, all you have to do is to add ‘django.middleware.csrf.CsrfViewMiddleware’, and ‘django.middleware.csrf.CsrfResponseMiddleware’ to your MIDDLEWARE_CLASSES in your settings.py file.

MIDDLEWARE_CLASSES = ( ... 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.middleware.csrf.CsrfResponseMiddleware', ... )

Django 1.2 just released

admin — Thu, 20 May 2010 13:34:55 +0000

Here are the new features.

Welcome to Django Dev

admin — Thu, 29 Apr 2010 19:06:45 +0000

Just a new blog about Django development : generic code, test driven development, internationalization…