Question

我正在尝试将Peewee ORM用于我的新（Flask）网站，现在我遇到了一个问题。我刚刚创建了一个简单的模型：

from peewee import TextField, DateTimeField, IntegerField, ForeignKeyField
from app import db

ROLE_USER = 0
ROLE_ADMIN = 1

class User(db.Model):
    nickname = TextField()
    email = TextField()
    role = IntegerField(default = ROLE_USER)

class Post(db.Model):
    body = TextField()
    timestamp = DateTimeField()
    user = ForeignKeyField(User, related_name='posts')

所以我创建了两个用户，之后我想创建一个新帖子。我是这样做的：

>>> from app.models import User
>>> u = User(nickname='john', email='john@email.com', role=0)
>>> u.save()
>>> from app.models import Post
>>> from datetime import datetime as dt
>>> p = Post(body='FIPO!!', timestamp = dt.now(), author=u)
>>> p.save()
No handlers could be found for logger "peewee"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/kramer65/dev/repos/microblog/flask/lib/python2.7/site-packages/peewee.py", line 2479, in save
    ret_pk = self.insert(**field_dict).execute()
  File "/Users/kramer65/dev/repos/microblog/flask/lib/python2.7/site-packages/peewee.py", line 1775, in execute
    return self.database.last_insert_id(self._execute(), self.model_class)
  File "/Users/kramer65/dev/repos/microblog/flask/lib/python2.7/site-packages/peewee.py", line 1470, in _execute
    return self.database.execute_sql(sql, params, self.require_commit)
  File "/Users/kramer65/dev/repos/microblog/flask/lib/python2.7/site-packages/peewee.py", line 1885, in execute_sql
    return self.sql_error_handler(exc, sql, params, require_commit)
  File "/Users/kramer65/dev/repos/microblog/flask/lib/python2.7/site-packages/peewee.py", line 1871, in sql_error_handler
    raise exception
sqlite3.IntegrityError: post.user_id may not be NULL

我不明白user_id显然是NULL，因为据我所知，peewee应该照顾好这个吗？

我做错了什么（如果是的话，那是什么？），或者这是peewee的问题？欢迎所有提示！

Answer 1

问题是，当您使用author=时，您正在使用user=。

原始

p = Post(body='FIPO!!', timestamp = dt.now(), author=u)

固定

p = Post(body='FIPO!!', timestamp = dt.now(), user=u)

Peewee ORM给出了IntegrityError：user_id可能不是NULL

1 个答案: