diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/RegistrationController.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/RegistrationController.java
index 32640d8..f2e9d4e 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/RegistrationController.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/RegistrationController.java
@@ -53,6 +53,8 @@ public RedirectView registerUser(@Valid @ModelAttribute UserDto userDto,
         }
         System.out.println(result);
         User user = userService.registerUser(userDto);
+        if(user == null)
+            return new RedirectView("/registration/register-form?used");
         publisher.publishEvent(new RegistrationCompleteEvent(user, ApplicationUrl.getUrl(request)));
         return new RedirectView("/registration/register-form?success");
     }
diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/ShopController.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/ShopController.java
index 235b9cf..352fdd1 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/ShopController.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/ShopController.java
@@ -40,6 +40,21 @@ public ModelAndView shop(HttpServletRequest request) {
         return modelAndView;
     }
 
+    @GetMapping("/search")
+    public ModelAndView search(@RequestParam String search, HttpServletRequest request) {
+        ModelAndView modelAndView = new ModelAndView("shop");
+        List<Category> categories = categoryService.getCategoryList();
+        modelAndView.addObject("categories", categories);
+        modelAndView.addObject("request", request);
+        modelAndView.addObject("search", search);
+        return modelAndView;
+    }
+
+//    @GetMapping("searchProduct")
+//    public List<Product> searchProducts(@RequestParam String search) {
+//        List<Product> products = productService.searchProducts(search);
+//    }
+
     @GetMapping("/product/{id}")
     public ModelAndView productDetail(@PathVariable Long id, HttpServletRequest request) {
         ModelAndView modelAndView = new ModelAndView("productDetail");
diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/UserController.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/UserController.java
index a00651b..c21cdea 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/UserController.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/controller/UserController.java
@@ -2,9 +2,8 @@
 
 import jakarta.servlet.http.HttpServletRequest;
 import org.ecommerce.spring.boot.vegetable.project.dto.UserDto;
-import org.ecommerce.spring.boot.vegetable.project.entity.OrderItem;
-import org.ecommerce.spring.boot.vegetable.project.entity.User;
-import org.ecommerce.spring.boot.vegetable.project.entity.UserOrder;
+import org.ecommerce.spring.boot.vegetable.project.entity.*;
+import org.ecommerce.spring.boot.vegetable.project.service.CategoryService;
 import org.ecommerce.spring.boot.vegetable.project.service.UserOrderService;
 import org.ecommerce.spring.boot.vegetable.project.service.UserService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -21,13 +20,17 @@
 @RequestMapping("/user")
 public class UserController {
 
-    @Autowired UserOrderService userOrderService;
-    @Autowired UserService userService;
+    @Autowired private UserOrderService userOrderService;
+    @Autowired private UserService userService;
+    @Autowired private CategoryService categoryService;
 
     @GetMapping("/purchase")
     public ModelAndView purchase(HttpServletRequest request) {
         ModelAndView modelAndView = new ModelAndView("user");
 
+        List<Category> categories = categoryService.getCategoryList();
+        modelAndView.addObject("categories", categories);
+
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         String userEmail = authentication.getName();
 
@@ -43,6 +46,9 @@ public ModelAndView purchase(HttpServletRequest request) {
     public ModelAndView account(HttpServletRequest request) {
         ModelAndView modelAndView = new ModelAndView("user");
 
+        List<Category> categories = categoryService.getCategoryList();
+        modelAndView.addObject("categories", categories);
+
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         String userEmail = authentication.getName();
 
diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/entity/Role.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/entity/Role.java
index 50880bc..f535441 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/entity/Role.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/entity/Role.java
@@ -24,6 +24,9 @@ public class Role {
     )
     private String name;
 
+//    @ManyToMany(mappedBy = "roles")
+//    private List<User> users = new ArrayList<>();
+
     public Role(String name) {
         this.name = name;
     }
diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepository.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepository.java
index 53d9178..10a6541 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepository.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepository.java
@@ -1,7 +1,11 @@
 package org.ecommerce.spring.boot.vegetable.project.repository;
 
+import jakarta.transaction.Transactional;
 import org.ecommerce.spring.boot.vegetable.project.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 import java.util.Optional;
@@ -9,4 +13,10 @@
 @Repository
 public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByEmail(String email);
+
+    void deleteByEnabled(Boolean enabled);
+
+    @Query(value = "DELETE FROM user_roles WHERE user_id = :id", nativeQuery = true)
+    @Modifying
+    void delete1(@Param("id") Long id);
 }
diff --git a/src/main/java/org/ecommerce/spring/boot/vegetable/project/service/implement/UserServiceImp.java b/src/main/java/org/ecommerce/spring/boot/vegetable/project/service/implement/UserServiceImp.java
index a7f9440..4f68d5d 100644
--- a/src/main/java/org/ecommerce/spring/boot/vegetable/project/service/implement/UserServiceImp.java
+++ b/src/main/java/org/ecommerce/spring/boot/vegetable/project/service/implement/UserServiceImp.java
@@ -27,6 +27,10 @@ public User registerUser(UserDto userDto) {
         if(role == null) {
             role = new Role("USER");
         }
+        Optional<User> check = userRepository.findByEmail(userDto.getEmail());
+        if(check.isPresent()) {
+            return null;
+        }
         User user = User.builder()
                 .firstName(userDto.getFirstName())
                 .lastName(userDto.getLastName())
diff --git a/src/main/resources/templates/home.html b/src/main/resources/templates/home.html
index a0b10ad..9020005 100644
--- a/src/main/resources/templates/home.html
+++ b/src/main/resources/templates/home.html
@@ -35,8 +35,8 @@
             </ul>
         </div>
         <div class="col-6">
-            <form class="d-flex search-bar" role="search">
-                <input class="form-control me-2 search-bar-input" type="search" placeholder="What do you need?">
+            <form class="d-flex search-bar" role="search" action="/shop/search">
+                <input class="form-control me-2 search-bar-input" type="search" placeholder="What do you need?" name="search">
                 <button class="btn btn-outline-success search-bar-submit" type="submit">SEARCH</button>
             </form>
         </div>
diff --git a/src/main/resources/templates/register.html b/src/main/resources/templates/register.html
index e486aa0..5800e45 100644
--- a/src/main/resources/templates/register.html
+++ b/src/main/resources/templates/register.html
@@ -16,6 +16,9 @@
             <div class="alert alert-info" th:if="${param.success}">
                 Please check your email to complete your registration.
             </div>
+            <div class="alert alert-danger" th:if="${param.used}">
+                Email is used.
+            </div>
 
             <div class="mb-3 row">
                 <label for="firstName" class="col-sm-4 col-form-label">First Name</label>
diff --git a/src/test/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepositoryTest.java b/src/test/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepositoryTest.java
new file mode 100644
index 0000000..dc9a4c8
--- /dev/null
+++ b/src/test/java/org/ecommerce/spring/boot/vegetable/project/repository/UserRepositoryTest.java
@@ -0,0 +1,27 @@
+package org.ecommerce.spring.boot.vegetable.project.repository;
+
+import jakarta.persistence.EntityManager;
+import jakarta.transaction.Transactional;
+import org.ecommerce.spring.boot.vegetable.project.entity.Role;
+import org.ecommerce.spring.boot.vegetable.project.entity.User;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@SpringBootTest
+class UserRepositoryTest {
+
+    @Autowired private UserRepository userRepository;
+    @Autowired private RoleRepository repository;
+    private EntityManager entityManager;
+
+
+    @Test
+    public void delete1() {
+        userRepository.delete1(16L);
+    }
+
+}
\ No newline at end of file