| wu | eb6e6ca | 2025-06-15 10:35:32 +0800 | [diff] [blame] | 1 | # models/post.py |
| 2 | from extensions import db |
| 3 | from datetime import datetime |
| 4 | |
| 5 | # association table for Post <-> Tag |
| 6 | post_tags = db.Table( |
| 7 | 'post_tags', |
| 8 | db.Column('post_id', db.Integer, db.ForeignKey('posts.id', ondelete='CASCADE'), primary_key=True), |
| 9 | db.Column('tag_id', db.Integer, db.ForeignKey('tags.id', ondelete='CASCADE'), primary_key=True) |
| 10 | ) |
| 11 | |
| 12 | class Post(db.Model): |
| 13 | __tablename__ = 'posts' |
| 14 | |
| 15 | id = db.Column(db.Integer, primary_key=True) |
| 16 | user_id = db.Column(db.Integer, db.ForeignKey('users.id', ondelete='CASCADE'), nullable=False) |
| 17 | topic_id = db.Column(db.Integer, db.ForeignKey('topics.id', ondelete='SET NULL')) |
| 18 | type = db.Column(db.Enum('text', 'image', 'video', 'document'), default='text', nullable=False) |
| 19 | title = db.Column(db.String(255), nullable=False) |
| 20 | content = db.Column(db.Text, nullable=False) |
| 21 | media_urls = db.Column(db.JSON) |
| 22 | status = db.Column(db.Enum('draft', 'pending', 'published', 'deleted', 'rejected'), |
| 23 | default='draft', nullable=False) |
| 24 | heat = db.Column(db.Integer, default=0, nullable=False) |
| 25 | created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False) |
| 26 | updated_at = db.Column(db.DateTime, default=datetime.utcnow, |
| 27 | onupdate=datetime.utcnow, nullable=False) |
| 28 | |
| 29 | # relationships |
| 30 | tags = db.relationship('Tag', secondary=post_tags, backref=db.backref('posts', lazy='dynamic')) |
| 31 | behaviors = db.relationship('Behavior', backref='post', lazy='dynamic', cascade='all, delete') |
| 32 | comments = db.relationship('Comment', backref='post', lazy='dynamic', cascade='all, delete') |