Dart Web UI - 将对象数据传递到组件 [英] Dart Web UI - Passing object data to a component

问题描述

我尝试将数据传递给自定义组件。
示例：http：//www.dartlang .org / articles / web-ui /＃pass-data-to-component 效果不错。

I am trying to pass data to custom component. The example at http://www.dartlang.org/articles/web-ui/#pass-data-to-component works good.

但我想传递一个JsonObject var，它与此消息崩溃：

But I'm trying to pass a JsonObject var, and it crash with this message:

Exception: type 'String' is not a subtype of type 'JsonObject' of  'value'. 

所以看起来我只能传递字符串和数字数据？

So it seems like I can pass only strings and numbers data?

推荐答案

这适用于我传递Map类时。也许您可以更改代码以使用 dart：json 库和核心库Map类，而不是第三方 JsonObject 。

This works for me when passing the Map class. Perhaps you could change your code to use the dart:json library and the core library Map class, rather than the third-party JsonObject.

JsonObject还使用了dart2js中尚不支持的库库，因此可能不适合基于浏览器的开发。

JsonObject also uses the mirrors library, which is not yet supported in dart2js, so may not be a good fit for browser based development.

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