I would like to cache some view until end of month.
e.g.
@cache_page_expire_at_end_of_month
def some_view(request):
...
I found this old question Django per-view caching: set expiry time rather than cache timeout? But I can't get it to work.
To cache a Django view until the end of the month, you need to create a custom decorator that calculates the remaining time until the end of the current month and then uses Django's caching mechanism with that specific timeout. Django does not have a built-in decorator for setting cache expiration to the end of the month, so you'll have to implement this functionality yourself.
Here’s a step-by-step guide on how to do it:
from django.utils.decorators import method_decorator
from django.utils.decorators import method_decorator
from django.views.decorators.cache import cache_page
from datetime import datetime, timedelta
import calendar
def cache_page_expire_at_end_of_month(timeout_default=86400):
def decorator(view_func):
def _wrapped_view_func(*args, **kwargs):
# Calculate the current time and find the last day of the month
now = datetime.now()
_, last_day = calendar.monthrange(now.year, now.month)
end_of_month = datetime(now.year, now.month, last_day, 23, 59, 59)
# Calculate remaining seconds until the end of the month
delta = end_of_month - now
timeout = max(delta.total_seconds(), timeout_default)
# Apply the cache_page decorator with the calculated timeout
return cache_page(timeout)(view_func)(*args, **kwargs)
return _wrapped_view_func
return decorator
# Usage example
@cache_page_expire_at_end_of_month()
def some_view(request):
# Your view logic here
...
To apply this decorator to a class-based view, you'll need to use the method_decorator like this:
from django.utils.decorators import method_decorator
@method_decorator(cache_page_expire_at_end_of_month(), name='dispatch')
class SomeClassBasedView(View):
def get(self, request, *args, **kwargs):
# Your view logic here
...