Added currency and currencyLocale support

src/Cashier.php

@@ -26,6 +26,13 @@ class Cashier
      */
     protected static $currencySymbol = '€';
 
+    /**
+     * The current currency symbol.
+     *
+     * @var string
+     */
+    protected static $currencyLocale = 'de_DE';
+
     /**
      * The custom currency formatter.
      *
@@ -89,6 +96,17 @@ public static function useCurrencySymbol($symbol)
         static::$currencySymbol = $symbol;
     }
 
+    /**
+     * Set the currency locale to be used when formatting currency.
+     *
+     * @param  string  $locale
+     * @return void
+     */
+    public static function useCurrencyLocale($locale)
+    {
+        static::$currencyLocale = $locale;
+    }
+
     /**
      * Guess the currency symbol for the given currency.
      *
@@ -132,6 +150,16 @@ public static function usesCurrencySymbol()
         return static::$currencySymbol;
     }
 
+    /**
+     * Get the currency locale currently in use.
+     *
+     * @return string
+     */
+    public static function usesCurrencyLocale()
+    {
+        return static::$currencyLocale;
+    }
+
     /**
      * Set the custom currency formatter.
      *
@@ -155,7 +183,7 @@ public static function formatAmount(Money $money)
             return call_user_func(static::$formatCurrencyUsing, $money);
         }
 
-        $numberFormatter = new \NumberFormatter('de_DE', \NumberFormatter::CURRENCY);
+        $numberFormatter = new \NumberFormatter(static::$currencyLocale, \NumberFormatter::CURRENCY);
         $moneyFormatter = new IntlMoneyFormatter($numberFormatter, new ISOCurrencies);
 
         return $moneyFormatter->format($money);

src/CashierServiceProvider.php

@@ -34,6 +34,9 @@ public function boot()
             $this->publishConfig('cashier-configs');
             $this->publishViews('cashier-views');
         }
+
+        $this->configureCurrency();
+        $this->configureCurrencyLocale();
     }
 
     /**
@@ -97,4 +100,20 @@ protected function publishViews(string $tag)
             __DIR__.'/../resources/views' => $this->app->basePath('resources/views/vendor/cashier'),
         ], $tag);
     }
+
+    protected function configureCurrency()
+    {
+        $currency = config('cashier.currency', false);
+        if($currency) {
+            Cashier::useCurrency($currency);
+        }
+    }
+
+    protected function configureCurrencyLocale()
+    {
+        $locale = config('cashier.currency_locale', false);
+        if($locale) {
+            Cashier::useCurrencyLocale($locale);
+        }
+    }
 }

tests/CashierServiceProviderTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Laravel\Cashier\Tests;
+
+use Laravel\Cashier\Cashier;
+use Laravel\Cashier\CashierServiceProvider;
+
+class CashierServiceProviderTest extends BaseTestCase
+{
+    /** @test */
+    public function canOptionallySetCurrencyInConfig()
+    {
+        $this->assertEquals('INEXISTENT', config('cashier.currency', 'INEXISTENT'));
+
+        $this->assertEquals('€', Cashier::usesCurrencySymbol());
+        $this->assertEquals('eur', Cashier::usesCurrency());
+
+        config(['cashier.currency' => 'usd']);
+        $this->rebootCashierServiceProvider();
+
+        $this->assertEquals('usd', Cashier::usesCurrency());
+        $this->assertEquals('$', Cashier::usesCurrencySymbol());
+    }
+
+    /** @test */
+    public function canOptionallySetCurrencyLocaleInConfig()
+    {
+        $this->assertEquals('INEXISTENT', config('cashier.currency_locale', 'INEXISTENT'));
+        $this->assertEquals('de_DE', Cashier::usesCurrencyLocale());
+
+        config(['cashier.currency_locale' => 'nl_NL']);
+        $this->rebootCashierServiceProvider();
+
+        $this->assertEquals('nl_NL', Cashier::usesCurrencyLocale());
+    }
+
+    protected function rebootCashierServiceProvider()
+    {
+        tap(new CashierServiceProvider($this->app))->register()->boot();
+    }
+}

tests/CashierTest.php

@@ -4,6 +4,7 @@
 
 use Illuminate\Database\Eloquent\Model;
 use Laravel\Cashier\Cashier;
+use Laravel\Cashier\CashierServiceProvider;
 use Laravel\Cashier\Order\Order;
 use Laravel\Cashier\Order\OrderItem;
 use Laravel\Cashier\Subscription;
@@ -174,4 +175,14 @@ public function canOverrideDefaultCurrencySymbol()
         $this->assertEquals('usd', Cashier::usesCurrency());
         $this->assertEquals('$', Cashier::usesCurrencySymbol());
     }
+
+    /** @test */
+    public function canOverrideDefaultCurrencyLocale()
+    {
+        $this->assertEquals('de_DE', Cashier::usesCurrencyLocale());
+
+        Cashier::useCurrencyLocale('nl_NL');
+
+        $this->assertEquals('nl_NL', Cashier::usesCurrencyLocale());
+    }
 }