Add hashtag cascade relations

back/main.py

@@ -53,23 +53,35 @@ class Submission(db.Model):
     id = db.Column(db.Integer, primary_key=True, autoincrement=True)
     content = db.Column(db.Text, nullable=False)
     identity_token = db.Column(db.String(36), nullable=True)
-    status = db.Column(db.String(20), default='Pending')
+    status = db.Column(db.String(20), default='Pending', index=True)
     created_at = db.Column(db.DateTime, default=now_time)
     updated_at = db.Column(db.DateTime, default=now_time, onupdate=now_time)
     upvotes = db.Column(db.Integer, default=0)
     downvotes = db.Column(db.Integer, default=0)
     
     comments = db.relationship('Comment', backref='submission', lazy=True, cascade='all, delete-orphan')
+    hashtags = db.relationship(
+        'Hashtag',
+        primaryjoin="and_(Hashtag.type==0, Hashtag.target_id==Submission.id)",
+        cascade='all, delete-orphan',
+        lazy=True
+    )
 
 class Comment(db.Model):
     __tablename__ = 'comments'
     id = db.Column(db.Integer, primary_key=True, autoincrement=True)
-    submission_id = db.Column(db.Integer, db.ForeignKey('submissions.id'), nullable=False)
+    submission_id = db.Column(db.Integer, db.ForeignKey('submissions.id'), nullable=False, index=True)
     nickname = db.Column(db.String(50), default='匿名用户')
     content = db.Column(db.Text, nullable=False)
     identity_token = db.Column(db.String(36), nullable=True)
     created_at = db.Column(db.DateTime, default=now_time)
     parent_comment_id = db.Column(db.Integer, db.ForeignKey('comments.id'), nullable=True)
+    hashtags = db.relationship(
+        'Hashtag',
+        primaryjoin="and_(Hashtag.type==1, Hashtag.target_id==Comment.id)",
+        cascade='all, delete-orphan',
+        lazy=True
+    )
 
 class Report(db.Model):
     __tablename__ = 'reports'
@@ -711,10 +723,38 @@ def get_post_info():
 @app.route('/api/hot_topics', methods=['GET'])
 def get_hot_topics():
     try:
+        submission_tags = db.session.query(
+            Hashtag.name.label('name')
+        ).join(
+            Submission,
+            db.and_(Hashtag.type == 0, Hashtag.target_id == Submission.id)
+        ).filter(
+            Submission.status == 'Pass'
+        )
+
+        comment_tags = db.session.query(
+            Hashtag.name.label('name')
+        ).join(
+            Comment,
+            db.and_(Hashtag.type == 1, Hashtag.target_id == Comment.id)
+        ).join(
+            Submission,
+            Comment.submission_id == Submission.id
+        ).filter(
+            Submission.status == 'Pass'
+        )
+
+        union_subq = submission_tags.union_all(comment_tags).subquery()
+
         rows = db.session.query(
-            Hashtag.name,
+            union_subq.c.name,
-            db.func.count(Hashtag.name).label('count')
+            db.func.count(union_subq.c.name).label('count')
-        ).group_by(Hashtag.name).order_by(db.func.count(Hashtag.name).desc()).limit(3).all()
+        ).group_by(
+            union_subq.c.name
+        ).order_by(
+            db.func.count(union_subq.c.name).desc(),
+            union_subq.c.name.asc()
+        ).limit(3).all()
 
         data = [{"name": name, "count": int(count)} for name, count in rows]
         return jsonify({"code": 1000, "data": {"list": data}})

front/src/components/CommentSection.tsx

@@ -261,10 +261,14 @@ useEffect(() => {
     const diffHours = Math.floor(diffMs / 3600000);
     const sameDay = now.toDateString() === date.toDateString();
     if (sameDay) return `${diffHours}小时前`;
-    const diffDays = Math.floor(diffMs / 86400000);
+    const todayMidnight = new Date(now.getFullYear(), now.getMonth(), now.getDate()).getTime();
-    const diffMonths = Math.floor(diffDays / 30);
+    const dateMidnight = new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime();
-    if (diffMonths >= 1 && diffMonths < 12) return `${diffMonths}个月前`;
+    const diffDays = Math.max(1, Math.floor((todayMidnight - dateMidnight) / 86400000));
-    if (diffDays >= 1 && diffMonths < 1) return `${diffDays}天前`;
+    if (diffDays < 30) return `${diffDays}天前`;
+    let diffMonths = (now.getFullYear() * 12 + now.getMonth()) - (date.getFullYear() * 12 + date.getMonth());
+    if (now.getDate() < date.getDate()) diffMonths -= 1;
+    if (diffMonths < 1) diffMonths = 1;
+    if (diffMonths < 12) return `${diffMonths}个月前`;
     const yyyy = date.getFullYear();
     const mm = String(date.getMonth() + 1).padStart(2, '0');
     const dd = String(date.getDate()).padStart(2, '0');
@@ -293,13 +297,12 @@ useEffect(() => {
                   a: ({ node, ...props }) => {
                     const href = props.href;
                     if (href && typeof href === 'string' && href.startsWith('/tag/#')) {
-                      const hash = href.slice('/tag/'.length);
                       return (
                         <a
                           {...props}
                           onClick={(e) => {
                             e.preventDefault();
-                            navigate({ pathname: '/tag', hash });
+                            navigate(href);
                           }}
                         />
                       );

front/src/components/PostCard.tsx

@@ -252,10 +252,14 @@ const PostCard = ({
     const diffHours = Math.floor(diffMs / 3600000);
     const sameDay = now.toDateString() === date.toDateString();
     if (sameDay) return `${diffHours}小时前`;
-    const diffDays = Math.floor(diffMs / 86400000);
+    const todayMidnight = new Date(now.getFullYear(), now.getMonth(), now.getDate()).getTime();
-    const diffMonths = Math.floor(diffDays / 30);
+    const dateMidnight = new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime();
-    if (diffMonths >= 1 && diffMonths < 12) return `${diffMonths}个月前`;
+    const diffDays = Math.max(1, Math.floor((todayMidnight - dateMidnight) / 86400000));
-    if (diffDays >= 1 && diffMonths < 1) return `${diffDays}天前`;
+    if (diffDays < 30) return `${diffDays}天前`;
+    let diffMonths = (now.getFullYear() * 12 + now.getMonth()) - (date.getFullYear() * 12 + date.getMonth());
+    if (now.getDate() < date.getDate()) diffMonths -= 1;
+    if (diffMonths < 1) diffMonths = 1;
+    if (diffMonths < 12) return `${diffMonths}个月前`;
     const yyyy = date.getFullYear();
     const mm = String(date.getMonth() + 1).padStart(2, '0');
     const dd = String(date.getDate()).padStart(2, '0');
@@ -275,13 +279,12 @@ const PostCard = ({
               a: ({ node, ...props }) => {
                 const href = props.href;
                 if (href && typeof href === 'string' && href.startsWith('/tag/#')) {
-                  const hash = href.slice('/tag/'.length);
                   return (
                     <a
                       {...props}
                       onClick={(e) => {
                         e.preventDefault();
-                        navigate({ pathname: '/tag', hash });
+                        navigate(href);
                       }}
                     />
                   );