angular/components

DatePicker not showing initial value when using MomentAdapter

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#13,264 建立於 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

貢獻者指南

技術棧
typescriptangular
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Angular basicsDatepicker usage
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.