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VueJS Locale

VueJS Plugin for advanced localization of web applications.

Links

• GitHub
• NPM

Installation

Should be installed locally in your project source code:

Installation via JSPM:

jspm install npm:vue-locale

Alternatively you can also use plain old NPM:

npm install vue-locale --save

Integration

Inside your VueJS application you have to register the VueLocale plugin:

import VueLocale from "vue-locale";

Vue.use(VueLocale,
{
  language: SELECTED_LANGUAGE,
  currency: SELECTED_CURRENCY,
  messages: MESSAGE_TEXTS
})

While these are typical examples of values:

• SELECTED_LANGUAGE: "de", "en", "fr", ... (any valid language identifier)
• SELECTED_CURRENCY: "EUR", "USD", ... (any valid currency from CLDR data)
• MESSAGE_TEXTS: { key : value, ...}

Loading required locale data

Depending on whether your clients support the Intl API + all relevant locales (prominent exceptions right now are NodeJS, Safari on Mac and Safari on iOS) the amount of data and polyfills to load differs.

Loading Intl-Polyfill + Data for 4 Locales

import intl_en from "intl/locale-data/json/en.json"
import intl_de from "intl/locale-data/json/de.json"
import intl_fr from "intl/locale-data/json/fr.json"
import intl_es from "intl/locale-data/json/es.json"

IntlPolyfill.__addLocaleData(intl_en)
IntlPolyfill.__addLocaleData(intl_de)
IntlPolyfill.__addLocaleData(intl_fr)
IntlPolyfill.__addLocaleData(intl_es)

The data loaded here contains information on how to format dates (+ calendar data) and numbers (+ currencies).

Loading FormatJS Data for 4 Locales

Because of an incompatible JSONP-like approach of the data delivered through FormatJS, we have integrated the data in some ES2015/JSPM compatible way in the vue-locale project. To load the data to the following:

import IntlRelativeFormat from "intl-relativeformat"

import relative_en from "./data/en.js"
import relative_de from "./data/de.js"
import relative_fr from "./data/fr.js"
import relative_es from "./data/es.js"

IntlRelativeFormat.__addLocaleData(relative_en)
IntlRelativeFormat.__addLocaleData(relative_de)
IntlRelativeFormat.__addLocaleData(relative_fr)
IntlRelativeFormat.__addLocaleData(relative_es)

The data loaded here contains formatting instructions for relative formats + the required plural function for figuring out the required plural wording for message formatting.

Usage

Adding Messages

You should pass the matching locale data structure with relevant messages e.g. German.

let messages =
{
  "my-message-identifier": "Hallo Welt!",
  "my-html-identifier": "Hallo <b>Welt</b>!",
  "my-personal-identifier": "Hallo {name}!",
  ...
}

Translating messages using VueJS filter

• Plain Text: {{ "my-message-identifier" | format-message }}
• HTML Output: {{{ "my-html-identifier" | format-message }}}
• Personal: Not possible because we can't pass the required additional data structure to the filter

Translating using function calls

• Plain Text: {{ $formatMessage("my-message-identifier") }}
• HTML Output: {{{ $formatMessage("my-html-identifier") }}}
• Personal: {{{ $formatMessage("my-personal-identifier", { name : screenName }) }}}

Formatting Numbers

• Number Formatting #1: {{ 3.14159 | format-number }} => "3,14159"
• Number Formatting #2: {{ 3.14159 | format-number 2 }} => "3,14"
• Number Formatting #3: {{ 3.14159 | format-number 0 }} => "3"
• Percent Formatting #1: {{ 0.641322 | format-percent }} => "64%"
• Percent Formatting #2: {{ 0.641322 | format-percent 2 }} => "64,13%"
• Currency Formatting #1: {{ 21.37 | format-currency }} => "21 €"
• Currency Formatting #2: {{ 21.37 | format-currency-precise }} => "21,37 €"

Formatting Dates/Times

• Date Formatting: {{ new Date | format-date }} => 12.2.2016
• Time Formatting: {{ new Date | format-time }} => 14:23 Uhr

Formatting Relative Dates

• Relative Formatting: {{ new Date - (1000 * 60 * 10) | format-relative }} => vor 10 Minuten

Copyright

Copyright 2015-2016
Sebastian Software GmbH