Question

我在我的表单上重构一个需要i18n配置对象的datepicker控件。

我拥有的是这个

import {BaseControl} from './base-control';

export class DatePickerControl extends BaseControl<Date> {
  controlType = 'datepicker';

  locale: any = {
    en: {
      firstDayOfWeek: 1,
      dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
      dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
      dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
      monthNames: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October',
        'November', 'December'],
      monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
      dateFormat: 'dd/mm/yy'
    },
    nl: {
      firstDayOfWeek: 1,
      dayNames: ['Zondag', 'Maandag', 'Dinsdag', 'Woensdag', 'Donderdag', 'Vrijdag', 'Zaterdag'],
      dayNamesShort: ['Zon', 'Maa', 'Din', 'Woe', 'Don', 'Vri', 'Zat'],
      ... You get it by now
    },
    fr: {
    },
    de: {
    },
    ...
  };

  constructor(options: {} = {}) {
    super(options);
  }

}

我在另一个文件中读取配置并在模板中使用它：

get i18nConfig(): any {
  let val = null;

  if (this.filter instanceof DatePickerControl) {
    const language = this.translateService.currentLang;
    val = <DatePickerControl>(this.filter).locale[language];
  }

  return val;
}

<p-calendar *ngSwitchCase="'datepicker'" [formControlName]="filter.key [id]="filter.key" [locale]="i18nConfig" [dateFormat]="i18nConfig.dateFormat">
</p-calendar>

现在我想在单独的.xx.json文件中维护所有配置对象。我知道我可以使用类似下面的解决方案，但它有效，但我不喜欢。

import * as i18n_en from './control-translations/datepicker/datepicker.en.json';
import * as i18n_nl from './control-translations/datepicker/datepicker.nl.json';
import * as i18n_fr from './control-translations/datepicker/datepicker.fr.json';

export class DatePickerControl extends BaseControl<Date> {
   ...
  getConfig(lang: string): any {
    switch (lang) {
      case 'nl':
        return i18n_nl;
      case 'fr':
        return i18n_fr;
      case 'en':
      default:
        return i18n_en;
    }
  }
   ...
}

理想情况下，我希望是这样的，但我认为不可能;

getConfig(lang: string): any {
    return `./control-translations/datepicker/datepicker.${lang}.json`;
}

还有其他我不知道的解决方案是 SYNCHRONOUS 吗？我真的不想让这段代码异步。如果没有其他办法，我将使用我以前不太喜欢的解决方案，它将不得不做出应有的...

提前谢谢！

Angular2 - 同步读取json文件

0 个答案: