如何在 Angular 2 的 DatePipe 中设置语言环境? [英] How to set locale in DatePipe in Angular 2?

问题描述

我想使用欧洲格式显示日期 dd/MM/yyyy 但使用 DatePipe shortDate 格式它只使用美国日期样式显示 MM/dd/yyyy.
我假设默认语言环境是 en_US.也许我在文档中遗漏了但如何更改 Angular2 应用程序中的默认语言环境设置?或者是否有某种方法可以将自定义格式传递给 DatePipe ?

I want to display Date using European format dd/MM/yyyy but using DatePipe shortDate format it only display using US date style MM/dd/yyyy.
I'm assuming thats the default locale is en_US. Maybe I am missing in the docs but how can I change the default locale settings in an Angular2 app? Or maybe is there some way to pass a custom format to DatePipe ?

推荐答案

从 Angular2 RC6 开始，您可以通过添加提供程序在应用模块中设置默认语言环境:

As of Angular2 RC6, you can set default locale in your app module, by adding a provider:

@NgModule({
  providers: [
    { provide: LOCALE_ID, useValue: "en-US" }, //replace "en-US" with your locale
    //otherProviders...
  ]
})

货币/日期/数字管道应该选择语言环境.LOCALE_ID 是一个 OpaqueToken，从 angular 导入/核心.

The Currency/Date/Number pipes should pick up the locale. LOCALE_ID is an OpaqueToken, to be imported from angular/core.

import { LOCALE_ID } from '@angular/core';

对于更高级的用例，您可能希望从服务中选择语言环境.创建使用日期管道的组件时，区域设置将被解析(一次):

For a more advanced use case, you may want to pick up locale from a service. Locale will be resolved (once) when component using date pipe is created:

{
  provide: LOCALE_ID,
  deps: [SettingsService],      //some service handling global settings
  useFactory: (settingsService) => settingsService.getLanguage()  //returns locale string
}

希望它对你有用.

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