I have a common data {the logged-in user's message number) to display on every page. I can simply pass to template as
dict={'messagenumber':5}
return render_to_response('template.html',dict,context_instance=RequestContext(request))
But it looks tedious if i have this dict data pass to very page. Is there an easier way to pass common data to every page?
Thanks
It blows me away how common this is. You want to use context processors my friend!
Very easy to create, like so:
def messagenumber_processor(request):
return {'messagenumber': 5}
Since messagenumber is a dynamic variable based on the User, you could pull data from the database by fetching from request.user
as you have full access to request
within each context processor.
Then, add that to your TEMPLATE_CONTEXT_PROCESSORS
within settings.py and you're all set :-) You can do any form of database operation or other logic within the context processor as well, try it out!
Just to save someone's time if new to django
settings.py
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",
"home.context_processor.remote_ip")
in home application, create a python file called context_processor.py
in the context_processor.py add a function like this:
def remote_ip(request):
return {'remote_ip': request.META['REMOTE_ADDR']}
use it in the templates like {{ remote_ip }}
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