django编写自定义上下文处理器

Question

I'm writing my own custom context_processor on django (1.11) and to get infos of an authenticated user from auth0. It's not my first time writing it and I don't understand where this error comes from :

ImportError : Module "auth.context_processors" does not define a "auth0_processors" attribute/class

Here's what it looks like :

auth/settings.py :

'context_processors': [
     'django.template.context_processors.debug',
     'django.template.context_processors.request',
     'django.contrib.auth.context_processors.auth',
     'django.contrib.messages.context_processors.messages',
     'auth.context_processors.auth0_processors', 
],

auth/context_processors/auth0_processors.py :

def auth0_user(request):
    try:
        user = request.session['profile']
    except Exception as e:
        user = None

    return {'auth0_user': user}

accounts/views.py :

def home(request):
    return render(request, 'home.html', {})

Any idea?

Answer 1

Instead of

'auth.context_processors.auth0_processors'

give the concrete method:

'auth.context_processors.auth0_processors.auth0_user'

At least that is what the error is complaining about:

does not define a "auth0_processors" attribute/class

It is looking for a class or attribute, so try with the function name.

From the documentation :

The context_processors option is a list of callables – called context processors – that take a request object as their argument and return a dictionary of items to be merged into the context.

In answer to your comment:

If you always need the same objects then just create one method that adds all of the required objects to the context instead of several methods.

EDIT:

Also note that with 'django.template.context_processors.request' you could already have the complete request object in the context. You might not need your own context processor if you just need access to the session.