{
  "widgettype": "Form",
  "options": {
    "title": "表单示例",
    "fields": [
      {
        "name": "username",
        "label": "用户名",
        "uitype": "str",
        "required": true
      },
      {
        "name": "email", 
        "label": "邮箱",
        "uitype": "email",
        "required": true
      },
      {
        "name": "age",
        "label": "年龄",
        "uitype": "int"
      },
      {
        "name": "active",
        "label": "激活状态",
        "uitype": "check"
      }
    ]
  }
}