feat: 新增点踩功能，列表卡片和详情页支持 👍/👎 投票

- 后端: 新增 dislike_count 字段（模型/Schema/数据库迁移）
- 后端: 新增 POST /api/jokes/{id}/dislike 端点
- 后端: 管理后台统计新增 total_dislikes
- 前端: 新增 useVote 组合函数（localStorage 持久化防重复）
- 前端: JokeCard 列表卡片新增 👍/👎 可点击投票按钮
- 前端: 详情页 ❤️ 改为 👍 赞一下 / 👎 踩一脚 双按钮

api/app/models/joke.py

@@ -25,6 +25,7 @@ class Joke(Base):
     status = Column(String(20), default="pending")
     view_count = Column(Integer, default=0)
     like_count = Column(Integer, default=0)
+    dislike_count = Column(Integer, default=0)
     created_at = Column(DateTime, default=func.now())
     updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
 

api/app/routers/admin.py

@@ -87,6 +87,7 @@ def joke_to_response(joke: Joke, db: Session = None) -> JokeResponse:
         status=joke.status,
         view_count=joke.view_count,
         like_count=joke.like_count,
+        dislike_count=joke.dislike_count,
         created_at=joke.created_at,
         updated_at=joke.updated_at,
         type_names=type_names,
@@ -224,6 +225,7 @@ def admin_stats(
     rejected_jokes = db.query(Joke).filter(Joke.status == "rejected").count()
     total_views = db.query(Joke).with_entities(func.sum(Joke.view_count)).scalar() or 0
     total_likes = db.query(Joke).with_entities(func.sum(Joke.like_count)).scalar() or 0
+    total_dislikes = db.query(Joke).with_entities(func.sum(Joke.dislike_count)).scalar() or 0
     return {
         "total_jokes": total_jokes,
         "approved_jokes": approved_jokes,
@@ -231,6 +233,7 @@ def admin_stats(
         "rejected_jokes": rejected_jokes,
         "total_views": total_views,
         "total_likes": total_likes,
+        "total_dislikes": total_dislikes,
     }
 
 

api/app/routers/jokes.py

@@ -76,6 +76,7 @@ def joke_to_response(joke: Joke, type_map: dict = None, crowd_map: dict = None)
         status=joke.status,
         view_count=joke.view_count,
         like_count=joke.like_count,
+        dislike_count=joke.dislike_count,
         created_at=joke.created_at,
         updated_at=joke.updated_at,
         type_names=type_names,
@@ -207,10 +208,8 @@ def get_random_joke(db: Session = Depends(get_db)):
     return joke_to_response(joke, type_map, crowd_map)
 
 
-@router.post("/{joke_id}/like")
-def like_joke(joke_id: int, db: Session = Depends(get_db)):
-    """为笑话点赞（仅允许已审核通过的笑话）"""
-    # 先检查笑话是否存在且已审核
+def _vote_joke(joke_id: int, field: str, db: Session):
+    """通用投票逻辑：点赞或点踩（仅允许已审核通过的笑话）"""
     joke = db.query(Joke).filter(
         Joke.id == joke_id,
         Joke.status == "approved"
@@ -218,8 +217,20 @@ def like_joke(joke_id: int, db: Session = Depends(get_db)):
     if not joke:
         raise HTTPException(status_code=404, detail="笑话不存在")
     # 使用原子更新避免并发竞态
-    db.query(Joke).filter(Joke.id == joke_id).update({Joke.like_count: Joke.like_count + 1})
+    update_data = {getattr(Joke, field): getattr(Joke, field) + 1}
+    db.query(Joke).filter(Joke.id == joke_id).update(update_data)
     db.commit()
-    # 获取更新后的值
     db.refresh(joke)
-    return {"message": "点赞成功", "like_count": joke.like_count}
+    return {"message": "操作成功", field: getattr(joke, field)}
+
+
+@router.post("/{joke_id}/like")
+def like_joke(joke_id: int, db: Session = Depends(get_db)):
+    """为笑话点赞（仅允许已审核通过的笑话）"""
+    return _vote_joke(joke_id, "like_count", db)
+
+
+@router.post("/{joke_id}/dislike")
+def dislike_joke(joke_id: int, db: Session = Depends(get_db)):
+    """为笑话点踩（仅允许已审核通过的笑话）"""
+    return _vote_joke(joke_id, "dislike_count", db)

api/app/schemas/joke.py

@@ -34,6 +34,7 @@ class JokeResponse(JokeBase):
     ai_level: str | None = None
     view_count: int
     like_count: int
+    dislike_count: int
     created_at: datetime
     updated_at: datetime
     type_names: list[str] | None = None

api/main.py

@@ -12,6 +12,18 @@ from app.models.feedback import Feedback  # 注册模型，确保 create_all 能
 # 创建新表（如果不存在）
 Base.metadata.create_all(bind=engine)
 
+# 对已有表新增字段的兼容迁移（SQLite 不支持 ALTER TABLE ADD COLUMN IF NOT EXISTS）
+def _migrate_db():
+    from sqlalchemy import inspect, text
+    inspector = inspect(engine)
+    columns = [c["name"] for c in inspector.get_columns("jokes")]
+    if "dislike_count" not in columns:
+        with engine.connect() as conn:
+            conn.execute(text("ALTER TABLE jokes ADD COLUMN dislike_count INTEGER DEFAULT 0"))
+            conn.commit()
+
+_migrate_db()
+
 # Create FastAPI application
 app = FastAPI(title=API_TITLE, version=API_VERSION)