| 1 | 5a6
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| 2 | > from django.core.cache import cache
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| 3 | 10a12
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| 4 | > import md5
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| 5 | 123a126
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| 6 | > self._cacheme = True
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| 7 | 482a486,509
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| 8 | > def nocache(self):
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| 9 | > self._cacheme = False
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| 10 | > return self
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| 11 | >
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| 12 | > def cache(self,time,force=False):
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| 13 | > """
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| 14 | > Caches QuerySet objects if their cachekey is not already in the cache.
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| 15 | > Returns the original QuerySet. Will cache the new result if force=True.
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| 16 | > """
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| 17 | > self._cacheme = True
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| 18 | > # must cache for a positive number of seconds
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| 19 | > if time > 0:
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| 20 | > cachekey = self._cachekey()
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| 21 | > # only cache if it is not currently cached
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| 22 | > if force or not cache.get(cachekey):
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| 23 | > cache.set(cachekey,self,time)
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| 24 | > return self
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| 25 | > else:
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| 26 | > raise Exception('Django ORM caching error: You must specify a positive time interval.')
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| 27 | >
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| 28 | > def _cachekey(self):
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| 29 | > m = md5.new(str(self.query))
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| 30 | > return m.hexdigest()
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| 31 | >
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| 32 | 599a627,634
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| 33 | > # make sure to set new object's cacheme value to old value
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| 34 | > c._cacheme = self._cacheme
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| 35 | > # only test against the cache if cacheme variable is True
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| 36 | > if c._cacheme:
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| 37 | > cachekey = c._cachekey()
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| 38 | > cached = cache.get(cachekey)
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| 39 | > if cached:
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| 40 | > c = cached
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