商家列表接口，添加商品返回。

app/api/endpoints/merchant.py

@@ -15,7 +15,8 @@ from app.api.deps import get_admin_user
 from app.models.user import UserDB
 from app.core.response import success_response, error_response, ResponseModel
 from app.models.merchant_pay_order import MerchantPayOrderDB
-from sqlalchemy.sql import func
+from sqlalchemy.sql import func, desc
+from app.models.merchant_product import MerchantProductDB
 
 router = APIRouter()
 
@@ -207,6 +208,27 @@ async def list_merchants(
         ).group_by(MerchantPayOrderDB.merchant_id).all()
     )
 
+    # 获取商家最新或限购商品
+    merchant_products = {}
+    for merchant_id in merchant_ids:
+        product = db.query(MerchantProductDB).filter(
+            MerchantProductDB.merchant_id == merchant_id,
+            MerchantProductDB.status == True  # 只查询上架商品
+        ).order_by(
+            # 优先选择有限购的商品，其次按创建时间倒序
+            desc(MerchantProductDB.purchase_limit > 0),
+            desc(MerchantProductDB.create_time)
+        ).first()
+        
+        if product:
+            merchant_products[merchant_id] = {
+                "product_id": product.id,
+                "product_name": product.name,
+                "product_price": float(product.sale_price),
+                "product_image": product.image_url,
+                "purchase_limit": product.purchase_limit
+            }
+
     # 处理返回结果
     merchant_list = [{
         **MerchantInfo.model_validate(m[0]).model_dump(),
@@ -214,6 +236,7 @@ async def list_merchants(
         "user_phone": m[2],
         "user_nickname": m[3],
         "online_pay_count": pay_order_counts.get(m[0].id, 0),
+        "featured_product": merchant_products.get(m[0].id),
         "distance": round(m[4]) if longitude is not None and latitude is not None else None
     } for m in merchants]
 

app/models/merchant_order.py

@@ -53,7 +53,6 @@ class MerchantOrderInfo(BaseModel):
     product_image: Optional[str] = None
     product_price: Optional[float] = None
     merchant_name: Optional[str] = None
-    merchant_logo: Optional[str] = None
     merchant_address: Optional[str] = None
     
     class Config:

app/models/merchant_pay_order.py

@@ -42,7 +42,6 @@ class MerchantPayOrderInfo(BaseModel):
     update_time: Optional[datetime]
     pay_time: Optional[datetime]
     merchant_name: Optional[str] = None
-    merchant_logo: Optional[str] = None
     
     class Config:
         from_attributes = True