我希望它能够由CURRENT USER过滤并删除帖子。有人告诉我使用.WHERE而不是.FILTER,但是它们都不起作用,并且出现属性错误。我该如何工作?
通过这种方式,我只能删除db.session.query(Post).delete()
的所有用户帖子,但我希望这样做,因此它只删除CURRENT_USER.ID(当前登录到我的会话的用户)的帖子
我添加了当前模型:
@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)
答案 0 :(得分:1)
delete()
返回True / False,即0或1即int
,因此您无法对其进行过滤
尝试:
db.session.query(Post).filter(Post.user_id == current_user.id).delete()