AngularJS translate: Format dynamic dates

问题:

Using AngularJS and angular-translate I am trying to insert a date as parameter in a translated text.

The basic task is documented by the translate package:

<p>{{ 'MyText' | translate:{myDate:someControllerDate} }}</p>

with this in a localized json-file:

(english)'MyText': 'This is the date: {{myDate}}.'
(danish) 'MyText': 'Dette {{myDate}} er datoen.'

This gives me:

(english) This is the date: 2015-04-29T00:00:00.

(danish) Dette 2015-04-29T00:00:00 er datoen.

The problem: I would like to format the date to match the language (or culture, but for now the language will be good enough).

The desired result is:

(english) This is the date: 04-29-2015.

(danish) Dette 29-04-2015 er datoen.

I was hoping for a syntax along these lines:

(english)'MyText': 'This is the date: {{myDate:MM-dd-yyyy}}.'
(danish) 'MyText': Dette {{myDate:dd-MM-yyyy}} er datoen.'

Or perhaps:

<p>{{ 'MyText' | translate:{{myDate:someControllerDate | translate:'MyDateFormat'}} }}</p>

with

(english)'MyDateFormat': 'MM-dd-yyyy'
(danish) 'MyDateFormat': 'dd-MM-yyyy'

Is there a way to achieve the desired result, preferably without having to format the date inside the controller (keeping logic and view separated)?

回答1:

Assuming you have following angular-translate translations definitions:

//de    
"with_date": "German: {{date|date:'short'}}"

//en    
"with_date": "English: {{date|date:'medium'}}"

Then inside a view you can do:

<h1>{{ 'with_date'|translate:{date:today} }}</h1>

Where today is defined in controller i.e.:

$scope.today = new Date();

Assuming you've loaded angular-locale_* with correct locale the dates will be formatted in a language/country specific way.

Here's a demo.

Having said that localization mechanism built into angular (ngLocale) is very limited and when it comes to dates you can accomplish wonders with moment.js