Symfony2 自定义表单

Question

我的表单带有从数据库加载的复选框（我使用实体字段类型）。复选框是地区和地区。我有以下数据库架构：

+-----------------------------------+
| id | parent_id | name             |
+-----------------------------------+
| 1  | NULL      | Region           |
+-----------------------------------+
| 2  | 1         | District         |
+-----------------------------------+
| 3  | 1         | Another district |
+-----------------------------------+
| 4  | NULL      | Another region   |
+-----------------------------------+
| 5  | 4         | Next district    |
+-----------------------------------+

问题是我需要以下表格。怎么做呢？

<b>Region</b><!-- Loaded from database -->
<!-- Dictricts ordered by name -->
<input type="checkbox" id="someId" value="3"><label for="someId">Another district</label>
<input type="checkbox" id="someId" value="2"><label for="someId">District</label>
<b>Another region</b><!-- Loaded from database -->
<!-- Dictricts ordered by name -->
<input type="checkbox" id="someId" value="5"><label for="someId">Next district</label>

Answer 1

感谢这篇文章，我已经通过自定义呈现表单模板解决了这个问题。

Answer 2

带有选项的 EntityType 字段：

• multiple = true
• Expanded = true
• property = 'name'
• class = 'YourBundle:YourEntity'
• query_builder = 'function (EntityRepository $er) {return $er->createQueryBuilder('r')
  ->where('r.parentId IS NOT NULL')
  ->orderBy('r.parentId', 'ASC')->orderBy('r.name', 'ASC');}'