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https://github.com/jazzband/django-dbtemplates.git
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47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
from django.core.cache import get_cache
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from django.contrib.sites.models import Site
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from dbtemplates.conf import settings
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def get_cache_backend():
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return get_cache(settings.DBTEMPLATES_CACHE_BACKEND)
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cache = get_cache_backend()
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def get_cache_key(name):
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current_site = Site.objects.get_current()
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return 'dbtemplates::%s::%s' % (name, current_site.pk)
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def get_cache_notfound_key(name):
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return get_cache_key(name)+'::notfound'
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def remove_notfound_key(instance):
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# Remove notfound key as soon as we save the template.
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cache.delete(get_cache_notfound_key(instance.name))
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def set_and_return(cache_key, content, display_name):
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# Save in cache backend explicitly if manually deleted or invalidated
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if cache:
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cache.set(cache_key, content)
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return (content, display_name)
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def add_template_to_cache(instance, **kwargs):
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"""
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Called via Django's signals to cache the templates, if the template
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in the database was added or changed.
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"""
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remove_cached_template(instance)
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remove_notfound_key(instance)
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cache.set(get_cache_key(instance.name), instance.content)
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def remove_cached_template(instance, **kwargs):
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"""
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Called via Django's signals to remove cached templates, if the template
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in the database was changed or deleted.
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"""
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cache.delete(get_cache_key(instance.name))
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