angular/components

DatePicker not showing initial value when using MomentAdapter

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#13,264 创建于 2018年9月22日

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P3area: material/datepickerhelp wanted

描述

Bug, feature request, or proposal:

Bug

What is the expected behavior?

The datepicker should show the initial value when provided.

What is the current behavior?

It does not

What are the steps to reproduce?

https://stackblitz.com/angular/kbyqgkdyyjo?file=app%2Fdatepicker-moment-example.ts

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Latest Angular. Chrome 69.0.3497.100 FireFox 62

Is there anything else we should know?

It is working here for some reason. https://material.angular.io/components/datepicker/overview#choosing-a-date-implementation-and-date-format-settings

贡献者指南

技术栈
typescriptangular
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Angular basicsDatepicker usage
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
The issue provides a StackBlitz reproduction (https://stackblitz.com/angular/kbyqgkdyyjo?file=app%2Fdatepicker moment example.ts) showing the DatePicker not displaying the initial value when using MomentAdapter. Investigate the MomentAdapter implementation in the Angular Material source to identify why the initial value binding fails. Compare with the working example on the official documentation site to spot differences. Look for any recent changes to the datepicker or MomentAdapter that may have caused the regression.