当前page继承了父page，怎么获取父page中的data

[maiawei]

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Description

[问题描述：站在其它人的角度尽可能清晰地、简洁地把问题描述清楚]

[Description of the issue]

Environment

• Platform: [开发者工具/iOS/Andriod/Web]
• Platform version: [对应工具或者iOS或者Andriod的版本号]
• Wechat version: [微信版本号]
• wepy-cli version: [wepy-cli -v]
• wepy version: [在package.json里]
• other version: [如果是插件问题，请列出问题插件的版本号]

Reproduce

[如何重现问题]

[How to reproduce the issue]

Observed Results

[实际表现]

[Observed Results]

Expected Results

[期望表现]

[Expected Results]

Relevant Code / Logs

  // TODO(you): code or logs here to reproduce the problem
  // 可以使用小程序代码片段功能，方便其它人帮助你定位代码问题
  // 详情可参考这里：https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html
  ```

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. 因为这个 Issue 最近没有任何有效回复，所以被自动标记为了stale。 如果在未来7天依旧没有任何激活操作，那么该 Issue 将会被自动关闭。 感谢您的提问。