我正在使用 MySQL 8.0 和 SQLAlchemy。我的 id 列没有增加,我不明白为什么。
SQLAlchemy 模型:
class Show(db.Model):
__tablename__ = "shows"
id = Column(Integer, primary_key=True, index=True)
name = Column(String)
type = Column(String)
status = Column(String)
episodes = Column(Integer)
series_entry_id = Column(Integer, ForeignKey("series.id"))
series_id = Column(Integer, ForeignKey("series.id"))
lists = relationship("List", secondary=show_list, back_populates="shows")
recommendations = relationship("Recommendation", backref=backref("shows"))
user_ratings = relationship("Rating", backref=backref("shows"))
alt_names = relationship("User", secondary=alt_names, back_populates="alt_show_names")
series_entry = relationship("Series", foreign_keys=[series_entry_id], uselist=False)
series = relationship("Series", foreign_keys=[series_id], post_update=True)
破解代码:
show = Show(
name=new_data["title"]["english"],
type=new_data["format"],
status=new_data["status"],
episodes=new_data["episodes"],
)
db.session.add(show)
db.session.commit()
我收到的原始错误是:
sqlalchemy.exc.DatabaseError: (mysql.connector.errors.DatabaseError) 1364 (HY000): Field 'id' doesn't have a default value
根据这个答案,我将索引参数添加到我的 id 列中,并编辑 my.ini 文件以使其脱离 STRICT_TRANS_TABLES 模式。新的错误是:
sqlalchemy.exc.IntegrityError: (mysql.connector.errors.IntegrityError) 1062 (23000): Duplicate entry '0' for key 'shows.PRIMARY'
我在该主题中找到的所有答案都涉及 AUTO_INCRMENT,但 SQLAlchemy 文档说这应该是这里的默认值,因为它是一个整数主键,没有指定为 false。我确实尝试添加 autoincrement=True 以防万一,但是当我尝试迁移它时,alembic 告诉我没有检测到任何更改。
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