fix

demo/src/main/java/com/example/demo/supply/Order/OrderMvcController.java

@@ -76,4 +76,10 @@ public class OrderMvcController {
             orderService.addProduct(newOrder.getId(), obj);
         return "redirect:/order";
     }
+
+    @PostMapping("/delete/{id}")
+    public String deleteOrder(@PathVariable Long id) {
+        orderService.deleteOrder(id);
+        return "redirect:/order";
+    }
 }

demo/src/main/resources/templates/order-dop.html

@@ -25,7 +25,6 @@
         <th scope="col">ID</th>
         <th scope="col">Название</th>
         <th scope="col">Лицензия</th>
-        <th scope="col"></th>
       </tr>
       </thead>
       <tbody>
@@ -35,23 +34,7 @@
         <td th:text="${supplier.id}"/>
         <td th:text="${supplier.name}"/>
         <td th:text="${supplier.license}"/>
-        <td style="width: 10%">
-          <div class="btn-group" role="group" aria-label="Basic example">
-            <a class="btn btn-warning button-fixed button-sm"
-               th:href="@{/supplier/edit/{id}(id=${supplier.id})}">
-              <i class="fa fa-pencil" aria-hidden="true"></i> Изменить
-            </a>
-            <button type="button" class="btn btn-danger button-fixed button-sm"
-                    th:attr="onclick=|confirm('Удалить запись?') && document.getElementById('remove-${supplier.id}').click()|">
-              <i class="fa fa-trash" aria-hidden="true"></i> Удалить
-            </button>
-          </div>
-          <form th:action="@{/supplier/delete/{id}(id=${supplier.id})}" method="post">
-            <button th:id="'remove-' + ${supplier.id}" type="submit" style="display: none">
-              Удалить
-            </button>
-          </form>
-        </td>
+
       </tr>
       </tbody>
     </table>

demo/src/main/resources/templates/order.html

@@ -21,6 +21,7 @@
         <th scope="col">Дата создания</th>
         <th scope="col">Поставщик</th>
         <th scope="col">Продукты</th>
+        <th scope="col"></th>
       </tr>
       </thead>
       <tbody>
@@ -32,6 +33,19 @@
         <td>
           <li th:each="product : ${order.products}" th:text="${product.name}"></li>
         </td>
+        <td style="width: 10%">
+          <div class="btn-group" role="group" aria-label="Basic example">
+            <button type="button" class="btn btn-danger button-fixed button-sm"
+                    th:attr="onclick=|confirm('Удалить запись?') && document.getElementById('remove-${order.id}').click()|">
+              <i class="fa fa-trash" aria-hidden="true"></i> Удалить
+            </button>
+          </div>
+          <form th:action="@{/order/delete/{id}(id=${order.id})}" method="post">
+            <button th:id="'remove-' + ${order.id}" type="submit" style="display: none">
+              Удалить
+            </button>
+          </form>
+        </td>
       </tr>
       </tbody>
     </table>