Hi
My model is:
class Tag(models.Model):
name = models.CharField(maxlength=30)
class Snippet(models.Model):
name = models.CharField(maxlength=30)
tags =
models.ManyToManyField(Tag,filter_interface=models.HORIZONTAL)
My aim to filter snippets according to multiple tag constraints
simultaneously.
However, the overlap of two sets just doesn't get filtered properly.
E.g.:
In [96]: Snippet.objects.filter(tags__name="home")
Out[96]: [<Snippet: clean home>, <Snippet: email from home>]
In [97]: Snippet.objects.filter(tags__name="email")
Out[97]: [<Snippet: email from home>, <Snippet: email from work>]
In [98]:
Snippet.objects.filter(tags__name="home").filter(tags__name="email")
# SHOULD return [<Snippet: email from home>]
Out[98]: []
I tried the exact same idea by using .filter(Q(..),Q(..)) and also
with the Q(..)&Q(..) option, as well as by dividing the process into
stages and inspecting the first filter's result on the way (it's
valid). Everything just ends up with the same empty list...
Any ideas?
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