[Django]-How to extend django template from python string

by

4👍

✅

It turns out there’s an even simpler way to achieve this:

from google.appengine.ext.webapp import template

parent = template.Template("<html><body>{% block content %}{% endblock %}</body></html>")
path = os.path.join(os.path.dirname(__file__), 'index.html')
template.render(path, template.Context({"baseTemplate": parent}))

Where the index.html file looks like this:

{% extends baseTemplate %}
{% block content %}
    <h1>Hello World!</h1>
{% endblock %}

In this case, the template object (as opposed to just a string) is passed into the context of the child template and used as the variable in the ‘extends’ tag.

👤Trevor

6👍

In order to implement string-only template extender, you would probably have to implement your template loader. Actually, a much cleaner solution is to use threed’s suggestion below. Pass a parent Template() in the context rather than the name of disk template:

>>> from django.template import Context, Template
>>> extend_me = Template("Before A. {% block a %}{% endblock %}. After A")
>>> str_template = "{% extends parent %} {% block a %}This is inside A{% endblock %}"
>>> Template(str_template).render(Context({"parent": extend_me}))
u'Before A. This is inside A. After A'

Unfortunately this doesn’t seem to work on django 1.3, possibly due to bug #7377 (you can’t use the extends and block tags in string templates). Though it does work fine in 1.2. So if you happen to be running 1.3, you can look up the history of this question and use my hack 🙂

The extends template tag allows you to specify a variable name (since ver 1.0).

There’s an example of it’s usage in this question: How do I use Django's template extends variable?

👤Seth

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