Add tag posts view and comment counts

back/main.py

@@ -607,6 +607,67 @@ def get_posts_info():
     except Exception as e:
         return jsonify({"code": 2003, "data": str(e)})
 
+@app.route('/api/get_posts_by_tag', methods=['GET'])
+def get_posts_by_tag():
+    try:
+        tag = request.args.get("tag")
+        if not tag:
+            return jsonify({"code": 2000, "data": "参数错误"})
+
+        tag = str(tag).strip().strip('"').strip("'")
+        if tag.startswith('#'):
+            tag = tag[1:]
+        if not tag:
+            return jsonify({"code": 2000, "data": "参数错误"})
+
+        page = request.args.get("page", 1, type=int)
+        if page < 1:
+            page = 1
+
+        per_page = 10
+        submission_ids_query = db.session.query(
+            Hashtag.target_id.label('submission_id')
+        ).filter(
+            Hashtag.type == 0,
+            Hashtag.name == tag
+        )
+
+        comment_submission_ids_query = db.session.query(
+            Comment.submission_id.label('submission_id')
+        ).join(
+            Hashtag,
+            db.and_(Hashtag.type == 1, Hashtag.target_id == Comment.id)
+        ).filter(
+            Hashtag.name == tag
+        )
+
+        union_subq = submission_ids_query.union(comment_submission_ids_query).subquery()
+
+        query = Submission.query.filter(
+            Submission.id.in_(db.select(union_subq.c.submission_id)),
+            Submission.status == 'Pass'
+        ).order_by(Submission.id.desc())
+
+        pagination = query.paginate(page=page, per_page=per_page, error_out=False)
+
+        data = []
+        for s in pagination.items:
+            data.append({
+                "id": s.id,
+                "content": s.content,
+                "upvotes": s.upvotes,
+                "downvotes": s.downvotes,
+                "created_at": s.created_at.isoformat() if s.created_at else None,
+                "time": s.created_at.isoformat() if s.created_at else None,
+                "modified": 0 if (not s.updated_at or not s.created_at or s.updated_at == s.created_at) else 1,
+                "comment_count": len(s.comments),
+                "total_pages": pagination.total,
+            })
+
+        return jsonify({"code": 1000, "data": data})
+    except Exception as e:
+        return jsonify({"code": 2003, "data": str(e)})
+
 @app.route('/api/post_info', methods=['GET'])
 def get_post_info():
     try: