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The problem -
@is_premium_user def sample_view: ....... ...... I want certain views accesible to only the premium users of the website.
And how can I use this decorator across various applications in my project?
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To create a decorator function in Python, I create an outer function that takes a function as an argument. There is also an inner function that wraps around the decorated function. To use a decorator ,you attach it to a function like you see in the code below.
Decorators are a way to restrict access to views based on the request method or control caching behaviour. This is particularly useful when you want to separate logged-in users from unauthenticated users or create an admin page that only privileged users can access.
Decorators provide a simple syntax for calling higher-order functions. By definition, a decorator is a function that takes another function and extends the behavior of the latter function without explicitly modifying it.
Played around with the various links above and couldn't get them working and then came across this really simple one which I adapted. http://code.activestate.com/recipes/498217-custom-django-login_required-decorator/
from functools import wraps from django.http import HttpResponseRedirect def authors_only(function): @wraps(function) def wrap(request, *args, **kwargs): profile = request.user.get_profile() if profile.usertype == 'Author': return function(request, *args, **kwargs) else: return HttpResponseRedirect('/') return wrap Using @wraps is better than manually overriding like doing wrap.__doc__ = fn.__doc__. Amongst other things, it ensures your wrapper function gets the same name as the wrapped function.
See https://docs.python.org/2/library/functools.html
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