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POPickle a django query?
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copied!<p>Is it possible to pickle or somehow store a django query in the database? This won`t work :</p> <pre><code>u = User.objects.all import cPickle pickled_query = cPickle.dumps(u) # and store the pickled_query in a db-field. </code></pre> <p>Any thoughts?</p> <p>Updated:</p> <pre><code>import cPickle class CustomData(models.Model): name = models.CharField(max_length = 30) pickled_query = models.CharField(max_length = 300) def get_custom_result(self): q = cPickle.loads(self.pickled_query) return q() >>> cd = CustomData(name="My data", pickled_query=cPickle.dumps(User.objects.all)) >>> cd.save() >>> for item in cd.get_custom_result(): print item # prints all the users in the database, not printing the query result # when pickled, but when called like cd.get_custom_result(), that is when # the query is actually executed. </code></pre> <p>Now that's what I want to do. I know this actual piece of code won`t run, but it shows my intention; to store a query, not the result, and execute that query at some point in the future.</p> <p>Update #2:</p> <pre><code>>>> from django.contrib.auth.models import User # adds two users; super and test >>> u = User.objects.filter(username = 'test') >>> import cPickle >>> s = cPickle.dumps(u.query) >>> s2 = cPickle.loads(s) >>> o = s2.model.objects.all() >>> o.query = s2 >>> for i in o: print i ... super </code></pre> <p>Still not completly satisfied. I know QuerySets are lazy so doing s2.model.objects.all() won't execute a query fetching all users? </p>

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