I'm moving data from another database and when I try to populate the
relational table created by django as a result of a ManyToMany field,
I run into a unique constraint error:
------------
duplicate key violates unique constraint
"main_msgpost_users_msgpost_id_key"
------------
msgpost_users is the table, with two columns: msgpost_id and user_id.
This is the model:
-------------
class MsgPost(models.Model):
thread = models.ForeignKey(MsgThread)
user = models.ForeignKey(User)
ts = models.DateTimeField(auto_now=True)
sub = models.CharField(maxlength=50)
body = models.TextField()
users = models.ManyToManyField(User,
related_name="msg_users")
-----------
Why would there be a unique constraint on *either* of the columns in a
ManyToMany rel table (hence "many")? Did I set up something wrong?
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