update search function

app/backend/routes/search.py

 from fastapi import APIRouter, Depends, Query
-from sqlalchemy.orm import Session
-from sqlalchemy.orm import joinedload
+from sqlmodel import Session, select
 from backend.database import get_session
 from backend.models.models import Shop, Product, Category
 from typing import List, Union
@@ -18,20 +17,21 @@ def search(
     db: Session = Depends(get_session),
 ):
     results = []
+
     if search_type in ["shops", "both"]:
-        shop_query = db.query(Shop)
+        shop_query = select(Shop)
         if name:
-            shop_query = shop_query.filter(Shop.name.ilike(f"%{name}%"))
-        results.extend(shop_query.all())
+            shop_query = shop_query.where(Shop.name.ilike(f"%{name}%"))
+        results.extend(db.exec(shop_query).all())
 
     if search_type in ["products", "both"]:
-        product_query = db.query(Product).options(joinedload(Product.category))
+        product_query = (
+            select(Product).join(Category).where(True)
+        )  # Ensures valid syntax
         if name:
-            product_query = product_query.filter(Product.name.ilike(f"%{name}%"))
+            product_query = product_query.where(Product.name.ilike(f"%{name}%"))
         if category:
-            product_query = product_query.join(Category).filter(
-                Category.name.ilike(f"%{category}%")
-            )
-        results.extend(product_query.all())
+            product_query = product_query.where(Category.name.ilike(f"%{category}%"))
+        results.extend(db.exec(product_query).all())
 
     return results