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- # -*- coding: utf-8 -*-
- from django import template
- from django.conf import settings
-
-
- try:
- Engine = None
- builtins = template.base.builtins
- except AttributeError:
- from django.template.engine import Engine
- builtins = Engine.get_default().template_builtins
-
-
- class NULL:
- pass
-
-
- class SettingsOverride(object): # pragma: no cover
- """
- Overrides Django settings within a context and resets them to their inital
- values on exit.
-
- Example:
-
- with SettingsOverride(DEBUG=True):
- # do something
- """
- def __init__(self, **overrides):
- self.overrides = overrides
-
- def __enter__(self):
- self.old = {}
- for key, value in self.overrides.items():
- self.old[key] = getattr(settings, key, NULL)
- setattr(settings, key, value)
-
- def __exit__(self, type, value, traceback):
- for key, value in self.old.items():
- if value is not NULL:
- setattr(settings, key, value)
- else:
- delattr(settings, key) # do not pollute the context!
-
-
- class TemplateTags(object): # pragma: no cover
- def __init__(self, *tags):
- self.lib = template.Library()
- for tag in tags:
- self.lib.tag(tag)
-
- def __enter__(self):
- self.old = list(builtins)
- builtins.insert(0, self.lib)
-
- def __exit__(self, type, value, traceback):
- builtins[:] = self.old
|
