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Python A Social Network with Flask Broadcasting Post Model

Posted by Alex Eastwood
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Alex Eastwood
Python Development Techdegree Graduate 17,499 Points

No value for argument 'model' in constructor call

class Post(Model):
    timestamp = DateTimeField(default=datetime.datetime.now)
    user = ForeignKeyField(
        rel_model=User,
        related_name='posts'
    )
    content = TextField()

    class Meta:
        database = DATABASE
        order_by = ('-timestamp',)

This code is throwing the above error. Googling it, every post is saying that i'm missing a positional argument in my init function but the class as Kenneth writes it doesnt have one, so I have no idea what's going wrong.

2 Answers

Alex Eastwood
.a{fill-rule:evenodd;}techdegree seal-36
Alex Eastwood
Python Development Techdegree Graduate 17,499 Points

Don't know if it's just the video is out of date but the peewee documentation gives the user assignment to be 

user = ForeignKeyField(User, backref='posts')

and that fixed it. Just in case anyone else gets this issue.

Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

I've marked you question as "feedback" so the developers will see it. Thanks!

MengHsin Ou
MengHsin Ou
5,317 Points
MengHsin Ou
MengHsin Ou
5,317 Points 
user = ForeignKeyField(
        model={User},  # added
        rel_model=User,  # point to the User model
        related_name='posts'  # who call and name their post
    )

I tried to see the document and added to fix it.