Django, template context processors

Question

I have a weird problem, I want to add a global query using context processors. This is how I did it by following:

made a processor.py in my app as such:

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Answer 1

You need to add the default values of TEMPLATE_CONTEXT_PROCESSORS. However, instead of hard-coding those values, which will be tied to a specific version of Django, you can append your context processor to the default values by the following:

from django.conf import global_settings
TEMPLATE_CONTEXT_PROCESSORS = global_settings.TEMPLATE_CONTEXT_PROCESSORS + (
    "myapp.processor.foos",
)

Make sure to include the trailing comma in the tuple, so that Python recognizes it as a tuple.

Answer 2

When you specify this:

TEMPLATE_CONTEXT_PROCESSORS = ('myapp.processor.foos',)

In your settings file, you are overriding the Django's default context processors. In order to extend the list, you need to include the default ones in your settings:

TEMPLATE_CONTEXT_PROCESSORS = (
    "django.core.context_processors.auth",
    "django.core.context_processors.debug",
    "django.core.context_processors.i18n",
    "django.core.context_processors.media",
    "myapp.processor.foos",
)

Note, the settings above are the defaults (plus your processor) for django 1.1.

Answer 3

Here what worked for me for Django 1.3

TEMPLATE_CONTEXT_PROCESSORS = (
    "django.contrib.auth.context_processors.auth",
    "django.core.context_processors.debug",
    "django.core.context_processors.i18n",
    "django.core.context_processors.media",
    "django.core.context_processors.static",
    "django.contrib.messages.context_processors.messages",
    "myapp.processor.foos", )