Laravel5 Intl Translator

• Introduction
• Requirements
• Installation
  • Publishing config and language files
    • Currently adapted locales
• Usage examples
  • Placeholders
  • Select
  • Plurals
    • Plural offset
• Formatting in details

Introduction

Laravel5 Intl Translator uses php-intl extension to provide translation for your application.

Please mind that this package breaks framework default behaviour for validators.

Due to MessageFormatter::formatMessage method, Validator::replacer method should return array of parameters as key-value pair, instead replacing placeholders in message.

Besides that app('translator')->get($key) always returns message in raw format (unparsed). Translated messages are returned by:

app('translator')->trans($key)
app('translator')->formatMessage($locale, $message, $params)

Requirements

• Laravel 5.2 or 5.3 or 5.8
• php-intl extension installed

Please feel free to contribute to this package for other Laravel versions support!

Installation

If you do not have php-intl extension you can install it by following command (Ubuntu, Debian)

$ sudo apt-get install php-intl

If you have other OS, you can use it's respective package manager

---

Laravel 5.8

composer require skysplit/laravel5-intl-translation=^3.0

Laravel 5.3

composer require skysplit/laravel5-intl-translation=^2.0

Laravel 5.2

composer require skysplit/laravel5-intl-translation=^1.0

All versions

In your config/app.php providers
Remove line

Illuminate\Translation\TranslationServiceProvider::class,
Illuminate\Validation\ValidationServiceProvider::class,

And add line:

Skysplit\Laravel\Translation\TranslationServiceProvider::class,
Skysplit\Laravel\Translation\ValidationServiceProvider::class,

Publishing config and language files

Be careful! This will override your existing resources/lang/{lang} files! Check Currently adapted locales table to see which files could be overriden.

php artisan vendor:publish --provider="Skysplit\Laravel\Translation\TranslationServiceProvider" --force

If you would like to publish only config

php artisan vendor:publish --provider="Skysplit\Laravel\Translation\TranslationServiceProvider" --tag=config

If you would like to publish only one language files set

php artisan vendor:publish --provider="Skysplit\Laravel\Translation\TranslationServiceProvider" --force --tag="lang.{locale}[,lang.{other_locale}]"

---

Currently adapted locales

Locale	Published files
en	auth.php, validation.php
pl	auth.php, pagination.php, passwords.php, validation.php

Usage examples

Both trans() and trans_choice() helper functions use this translator, so the only thing you have to change is your language files.

For detailed documentation please visit php's MessageFormatter docs and links related there

Placeholders

app/resources/lang/en/custom.php

return [
	'placeholder' => 'Hello there, {username}!'
]

view.blade.php

{{ trans('custom.placeholder', ['username' => 'Jane']); }}

Returns

Hello there, Jane!

Select

app/resources/lang/en/custom.php

return [
	'select' => '{gender, select, male{He} female{She} other{It}} has two legs and is {gender}!'
]

view.blade.php

{{ trans('custom.select', ['gender' => 'male']); }}
{{ trans('custom.select', ['gender' => 'female']); }}
{{ trans('custom.select', ['gender' => 'penguin']); }}

Returns

He has two legs and is male!
She has two legs and is female!
It has two legs and is penguin!

Plurals

app/resources/lang/en/custom.php

return [
	'plural' => 'Jon has {n, plural, =0{no apples} one{# apple} other{# apples}}'
]

view.blade.php

{{ trans_choice('custom.plural', 0); }}
{{ trans_choice('custom.plural', 1); }}
{{ trans_choice('custom.plural', 2); }}

Returns

Jon has no apples
Jon has 1 apples
Jon has 2 apples

Instead of trans_choice() you can you use trans() helper as well.

resources/lang/en/custom.php

return [
	'custom.plural' => 'Jon has {0, plural, =0{no apples} one{# apple} other{# apples}}, {grapes, plural, =0{no grapes} one{# grape} other{# grapes} and {oranges, plural, =0{no oranges} one{# orange} other{# oranges}}'
];

view.blade.php

{{ trans('custom.plural', [3, 'grapes' => 1, 'oranges' => 0]) }}

Returns

Jon has 3 apples, 1 grape and no oranges

---

As you can see, the only thing trans_choice() do is passing first argument as n parameter to trans() helper.

Plural offset

You can set offset for your plural rules. Consider this example:

You {n, plural, offset:1 =0{do not like this yet} =1{liked this} one{and one other person liked this} other{and # others liked this}}

Result:

You do not like this yet // n = 0
You liked this // n = 1
You and one other person liked this // n = 2
You and 2 others liked this // n = 3
You and 3 others liked this // n = 4

---

Plural rule are often very complex for languages. Intl does handle it for you.
For example in Polish few rule is applied when n % 10 = 2..4 and n % 100 != 12..14, while many rule is applied when n != 1 and n % 10 = 0..1 or n % 10 = 5..9 or n % 100 = 12..14.
In Serbian =1 will match when n = 1, but one will apply when n = 1, 21, 31, 41 etc.

Remember! You always have to provide other rule for plural translations.

For more details about pluralization please visit CLDR Plural Rules specificaton and CLDR Language plural rules.

Formatting in details

PHP's MessageFormatter also supports ordinal, spellout, number, date, time and duration formatting.
For detailed information please visit this great Yii2 Framework i18n Guide which covers every intl topic wonderfully.