我试图通过给定列的变量(asDateTime)将过滤器应用于core-list-dart。
此变量位于内容数据属性(模型)之外。当我访问此变量时,会抛出错误。
参见代码:
* dominio.dart *
class ContaPagar {
...
List<ContaPagarParcela> contaPagarParcelas;
}
class ContaPagarParcela {
...
DateTime dataVencimento;
}
* filter.dart *
class StringToDateTime extends Transformer<String, DateTime> {
String forward(DateTime dateTime) {
String str = dateTime.toString();
return str.substring(0, str.lastIndexOf(' '));
}
DateTime reverse(String str) {
try {
return DateTime.parse(str);
} on Exception {
return null;
}
}
}
* webcp.dart *
@observable ContaPagar contaPagar;
@observable StringToDateTime asDateTime = new StringToDateTime();
ApisContaPagar.created() : super.created() {
contaPagar.contaPagarParcelas = toObservable(new List()..add(new ContaPagarParcela()));
}
* webcp.html *
<core-list-dart id="core_list_dart_parcela" data="{{contaPagar.contaPagarParcelas}}">
<template>
<div class="itemParcela" horizontal layout>
<div>
<input is="core-input" type="date" value="{{model.dataVencimento | asDateTime}}" required>
</div>
</div>
</template>
</core-list-dart>
* Erro *
例外:未捕获错误:评估表达式时出错&#39;(model.dataVencimento | asDateTime)&#39;:Class&#39; _ListModel&#39;没有实例getter&#39; asDateTime&#39;。
NoSuchMethodError:找不到方法:&#39; asDateTime&#39; 接收者:&#39; _ListModel&#39;的实例 参数:[]
有没有办法访问core-list-dart之外的变量?
谢谢!