Hi,
I would like to track the viewing history for users to my site to see
which blog entries are being viewed by whom. And I would like to
track the user who is viewing it *IF* they are logged in, otherwise I
would like to ignore the user field (see models below)
[models.py]
class Entry(models.Model):
title = models.CharField(maxlength=250)
slug = models.SlugField(
maxlength=250,
prepopulate_from=('title'),
unique_for_date='pub_date'
)
body = models.TextField()
pub_date = models.DateTimeField(default=datetime.now())
class ViewHistory(models.Model):
entry = models.ForeignKey(Entry)
user = models.ForeignKey(User, blank=True)
timestamp = models.DateTimeField(auto_now=True,editable=False)
The problem is that I cannot save the ViewHistory unless the user is
logged in.
Apparently Django does not allow a blank user field (even it is
specified in the model) and I get the following error:
(1048, "Column 'user_id' cannot be null")
If I try to use an AnonymousUser object then Django complains:
ValueError: Cannot assign "<django.contrib.auth.models.AnonymousUser
object at 0xab7e84c>": "ViewHistory.user" must be a "User" instance.
Can anyone help me understand how to have a model with an optional
foreign key to the django.contrib.auth.models User object?
Thanks,
R
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