laravel-vue-i18n is a Vue3 plugin that allows to connect your Laravel Framework translation files with Vue. It uses the same logic used on Laravel Localization.
With npm:
npm i laravel-vue-i18n
or with yarn:
yarn add laravel-vue-i18n
If you want to see a screencast on how to setup check out this video: How to use Laravel Vue i18n plugin.
import { createApp } from 'vue'
import { i18nVue } from 'laravel-vue-i18n'
createApp()
.use(i18nVue, {
resolve: async lang => {
const langs = import.meta.glob('../../lang/*.json');
return await langs[`../../lang/${lang}.json`]();
}
})
.mount('#app');
For Server Side Rendering the resolve method should not receive a Promise
and instead take advantage of the eager
param like this:
.use(i18nVue, {
lang: 'pt',
resolve: lang => {
const langs = import.meta.glob('../../lang/*.json', { eager: true });
return langs[`../../lang/${lang}.json`].default;
},
})
In order to load php
translations, you can use this Vite
plugin.
// vite.config.js
import i18n from 'laravel-vue-i18n/vite';
export default defineConfig({
plugins: [
laravel([
'resources/css/app.css'
'resources/js/app.js',
]),
vue(),
// Laravel >= 9
i18n(),
// Laravel < 9, since the lang folder is inside the resources folder
// you will need to pass as parameter:
// i18n('resources/lang'),
],
});
In addition to that, you can use this Vite
plugin with additional paths to load from, this is usefull when you are using a package that let's you override your translations, or in case you are getting your application's lang files from different paths.
Note that if one key found in two paths, priority will be given to the last given path between these two (In this example translation key will be loaded from public/locales
)
// vite.config.js
import i18n from 'laravel-vue-i18n/vite';
export default defineConfig({
plugins: [
laravel([
'resources/css/app.css'
'resources/js/app.js',
]),
vue(),
i18n({
// you can also change your langPath here
// langPath: 'locales'
additionalLangPaths: [
'public/locales' // Load translations from this path too!
]
}),
],
});
During the
npm run dev
execution time, the plugin will create some files like thisphp_{lang}.json
on your lang folder. And to avoid that to be commited to your code base, I suggest to your.gitignore
this like:
lang/php_*.json
import { createApp } from 'vue'
import { i18nVue } from 'laravel-vue-i18n'
createApp()
.use(i18nVue, {
resolve: lang => import(`../../lang/${lang}.json`),
})
.mount('#app');
For Server Side Rendering the resolve method should receive a require
instead of a Promise
:
.use(i18nVue, {
lang: 'pt',
resolve: lang => require(`../../lang/${lang}.json`),
})
In order to load php
translations, you can use this Mix
plugin.
const mix = require('laravel-mix');
require('laravel-vue-i18n/mix');
// Laravel >= 9
mix.i18n();
// Laravel < 9, since the lang folder is inside the resources folder
// you will need to pass as parameter:
// mix.i18n('resources/lang');
<template>
<div>
<h1>{{ $t('Welcome, :name!', { name: 'Francisco' }) }}. </h1>
<div>Logged in {{ $tChoice('{1} :count minute ago|[2,*] :count minutes ago', 10) }}</div>
</div>
</template>
-
lang
(optional): If not provided it will try to find from the<html lang="pt">
tag. -
fallbackLang
(optional): If thelang
was not provided or is invalid, it will try reach for thisfallbackLang
instead, default is:en
. -
fallbackMissingTranslations
(optional): If thelang
is provided, but the translation key does not exist in that language it will fallback to thefallbackLang
instead. -
resolve
(required): The way to reach your language files. -
shared
(optional): Whether to share the sameI18n
instance between different Vue apps, default is:true
. -
onLoad
(optional): It's called everytime a language is loaded.
createApp().use(i18nVue, {
lang: 'pt',
resolve: lang => import(`../../lang/${lang}.json`),
})
The trans()
method can translate a given message.
// lang/pt.json
{
"Welcome!": "Bem-vindo!",
"Welcome, :name!": "Bem-vindo, :name!"
}
import { trans } from 'laravel-vue-i18n';
trans('Welcome!'); // Bem-vindo!
trans('Welcome, :name!', { name: 'Francisco' }) // Bem-vindo Francisco!
trans('Welcome, :NAME!', { name: 'Francisco' }) // Bem-vindo FRANCISCO!
The wTrans()
same as trans()
but returns a reactive obj with translated value,
use it instead of trans()
to watch any changes (language changes or lang files loaded) and set the new value.
// lang/pt.json
{
"Welcome!": "Bem-vindo!",
"Welcome, :name!": "Bem-vindo, :name!"
}
import { wTrans } from 'laravel-vue-i18n';
setup() {
return {
welcomeLabel: wTrans('Welcome!'),
welcomeFrancisco: wTrans('Welcome, :name!', { name: 'Francisco' })
}
}
<template>
<div>{{ welcomeLabel }}</div> // <div>Bem-vindo!</div>
<div>{{ welcomeFrancisco }}</div> // <div>Bem-vindo, Francisco!</div>
</template>
The transChoice()
method can translate a given message based on a count,
there is also available an trans_choice
alias, and a mixin called $tChoice()
.
// lang/pt.json
{
"There is one apple|There are many apples": "Existe uma maça|Existe muitas maças",
"{0} There are none|[1,19] There are some|[20,*] There are many": "Não tem|Tem algumas|Tem muitas",
"{1} :count minute ago|[2,*] :count minutes ago": "{1} há :count minuto|[2,*] há :count minutos"
}
import { transChoice } from 'laravel-vue-i18n';
transChoice('There is one apple|There are many apples', 1); // Existe uma maça
transChoice('{0} There are none|[1,19] There are some|[20,*] There are many', 19); // Tem algumas
transChoice('{1} :count minute ago|[2,*] :count minutes ago', 10); // Há 10 minutos.
The wTransChoice()
same as transChoice()
but returns a reactive obj with translated value,
use it instead of transChoice()
to watch any changes (language changes or lang files loaded) and set the new value.
// lang/pt.json
{
"There is one apple|There are many apples": "Existe uma maça|Existe muitas maças",
"{0} There are none|[1,19] There are some|[20,*] There are many": "Não tem|Tem algumas|Tem muitas",
"{1} :count minute ago|[2,*] :count minutes ago": "{1} há :count minuto|[2,*] há :count minutos"
}
import { wTransChoice } from 'laravel-vue-i18n';
setup() {
return {
oneAppleLabel: wTransChoice('There is one apple|There are many apples', 1),
multipleApplesLabel: wTransChoice('{0} There are none|[1,19] There are some|[20,*] There are many', 19)
}
}
<template>
<div>{{ oneAppleLabel }}</div> // <div>Existe uma maça</div>
<div>{{ multipleApplesLabel }}</div> // <div>Tem algumas</div>
</template>
The loadLanguageAsync()
can be used to change the location during the runtime.
import { loadLanguageAsync } from 'laravel-vue-i18n';
<template>
<div>{{ $t('Welcome!') }}</div>
<button @click="loadLanguageAsync('pt')">Change to Portuguese Language</button>
</template>
The getActiveLanguage()
returns the language that is currently being used.
import { getActiveLanguage } from 'laravel-vue-i18n';
const lang = getActiveLanguage(); // en
The isLoaded()
method checks if the language is loaded.
If the lang
parameter is not passed it will check for the actual language set.
import { isLoaded } from 'laravel-vue-i18n';
const loaded = isLoaded(); // true
const loaded = isLoaded('fr'); // false
Under the hood, the Vue plugin is using a I18n
class which encapsulates all the translation logic and the currently active language. This means that it's possible to create multiple class instances, each with different options and active language. This can be useful for scenarios where part of the app needs to be translated to a language different from the main UI.
Note that loaded languages are still shared between different instances. This avoids loading the same set of translations multiple times. The main difference between different instances will be the currently active language.
import { I18n } from 'laravel-vue-i18n'
const resolver = lang => import(`./fixtures/lang/${lang}.json`)
const i18nEn = new I18n({
lang: 'en',
resolve: resolver
})
const i18nPt = new I18n({
lang: 'pt',
resolve: resolver
})
i18nEn.trans('Welcome!') // will output "Welcome!"
i18nPt.trans('Welcome!') // will output "Bem-vindo!"
By default, installing the the i18nVue
plugin will create a shared instance. This instance is accessed when importing the translation functions, such as trans
, directly. When using multiple Vue app instances, it's possible to either share the I18n
instance between them, or have each app create its own instance.
Shared usage (default) - all Vue app instances will use the same I18n
class and currently active language:
import { i18nVue } from 'laravel-vue-i18n'
const appA = createApp()
.use(i18nVue, { lang: 'pt' })
.mount('#app-1');
const appB = createApp()
.use(i18nVue)
.mount('#app-2');
// elsewhere
import { trans } from 'laravel-vue-i18n'
trans('Welcome!') // will output "Bem-vindo!"
Non-shared usage - each Vue app will have its own I18n
instance & currently active language.
import { i18nVue } from 'laravel-vue-i18n'
const appA = createApp()
.use(i18nVue, {
lang: 'es'
shared: false, // don't use the shared instance
})
.mount('#app-1');
const appB = createApp()
.use(i18nVue, {
lang: 'pt'
shared: false, // don't use the shared instance
})
.mount('#app-2');
It's possible to access the shared instance via code as well:
import { I18n } from 'laravel-vue-i18n'
I18n.getSharedInstance()
It is possible to import a translation function before installing the i18nVue
plugin. When calling the translation function, ie trans()
, and the plugin has not been installed, a shared I18n
instance will be created with default options. This ensures that it's possible to import and call these functions without any fatal errors. However, this may yield undesired results. Therefore, it is advisable to never call any translation methods before the plugin is installed.