我想这是能够过滤后,由当前用户和删除它。有人告诉我使用.WHERE代替.FILTER,但它们都不起作用,我得到一个属性错误。我怎样才能让它工作
顺便说一句,我可以用db.session.query(Post).delete()
删除所有用户的帖子,但我希望它只删除当前_user.ID(当前登录到我的会话的用户)的帖子
我添加了我当前的模型:
@login_required
def delete_all_post():
if current_user.is_authenticated:
db.session.query(Post).delete().filter(Post.user_id == current_user.id)
db.session.commit()
flash('All of your posts has been deleted!', 'success')
return redirect(url_for('main.home'))```
class Post(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(100), nullable=False)
date_posted = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
content = db.Column(db.Text, nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
def __repr__(self):
return f"Post('{self.title}', {self.date_posted}')"
class User(db.Model, UserMixin):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(16), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
image_file = db.Column(db.String(20), nullable=False, default='default.jpg')
password = db.Column(db.String(60), nullable=False)
posts = db.relationship('Post', backref='author', lazy=True)
delete()
返回True/False,即0或1,即int
,因此不能对其进行筛选尝试:
db.session.query(Post).filter(Post.user_id == current_user.id).delete()
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