Add ext-intl as required in composer.json

[Hannoma]

The intl PHP extension seems to be required for the currency field. I think it would be nice for other Nova users to don't face the same issue by just adding it as a dependency. See the attached stack trace below. We fixed it by installing and enabling the intl PHP extension.

[2022-04-27 13:06:30] local.ERROR: Class "Locale" not found {"userId":"dc408316-549e-4339-91cf-52f55ce62823","exception":"[object] (Error(code: 0): Class \"Locale\" not found at /var/www/myproject/vendor/symfony/intl/Locale.php:21)
[stacktrace]
#0 /var/www/myproject/vendor/composer/ClassLoader.php(571): include()
#1 /var/www/myproject/vendor/composer/ClassLoader.php(428): Composer\\Autoload\\includeFile()
#2 /var/www/myproject/vendor/symfony/intl/Data/Bundle/Reader/BundleEntryReader.php(142): Composer\\Autoload\\ClassLoader->loadClass()
#3 /var/www/myproject/vendor/symfony/intl/ResourceBundle.php(53): Symfony\\Component\\Intl\\Data\\Bundle\\Reader\\BundleEntryReader->readEntry()
#4 /var/www/myproject/vendor/symfony/intl/Currencies.php(93): Symfony\\Component\\Intl\\ResourceBundle::readEntry()
#5 /var/www/myproject/vendor/laravel/nova/src/Fields/Currency.php(259): Symfony\\Component\\Intl\\Currencies::getFractionDigits()
#6 /var/www/myproject/vendor/laravel/nova/src/Fields/Currency.php(77): Laravel\\Nova\\Fields\\Currency->getStepValue()
#7 /var/www/myproject/vendor/laravel/nova/src/Makeable.php(14): Laravel\\Nova\\Fields\\Currency->__construct()
#8 /var/www/myproject/app/Nova/Event.php(93): Laravel\\Nova\\Element::make()
#9 /var/www/myproject/vendor/laravel/nova/src/ResolvesFields.php(609): App\\Nova\\Event->fields()
#10 /var/www/myproject/vendor/laravel/nova/src/ResolvesFields.php(596): Laravel\\Nova\\Resource->buildAvailableFields()
#11 /var/www/myproject/vendor/laravel/nova/src/ResolvesFields.php(120): Laravel\\Nova\\Resource->availableFieldsOnIndexOrDetail()
#12 /var/www/myproject/vendor/laravel/nova/src/ResolvesFilters.php(43): Laravel\\Nova\\Resource->filterableFields()
#13 /var/www/myproject/vendor/laravel/nova/src/ResolvesFilters.php(18): Laravel\\Nova\\Resource->resolveFiltersFromFields()
#14 /var/www/myproject/vendor/laravel/nova/src/Http/Controllers/FilterController.php(18): Laravel\\Nova\\Resource->availableFilters()
#15 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): Laravel\\Nova\\Http\\Controllers\\FilterController->__invoke()
#16 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(45): Illuminate\\Routing\\Controller->callAction()
#17 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Route.php(262): Illuminate\\Routing\\ControllerDispatcher->dispatch()
#18 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Route.php(205): Illuminate\\Routing\\Route->runController()
#19 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Router.php(721): Illuminate\\Routing\\Route->run()
#20 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}()
#21 /var/www/myproject/vendor/laravel/nova/src/Http/Middleware/Authorize.php(18): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#22 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Nova\\Http\\Middleware\\Authorize->handle()
#23 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Auth/Middleware/Authenticate.php(44): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#24 /var/www/myproject/vendor/laravel/nova/src/Http/Middleware/Authenticate.php(31): Illuminate\\Auth\\Middleware\\Authenticate->handle()
#25 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Nova\\Http\\Middleware\\Authenticate->handle()
#26 /var/www/myproject/vendor/laravel/nova/src/Http/Middleware/BootTools.php(20): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#27 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Nova\\Http\\Middleware\\BootTools->handle()
#28 /var/www/myproject/vendor/laravel/nova/src/Http/Middleware/DispatchServingNovaEvent.php(24): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#29 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Nova\\Http\\Middleware\\DispatchServingNovaEvent->handle()
#30 /var/www/myproject/vendor/inertiajs/inertia-laravel/src/Middleware.php(88): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#31 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Inertia\\Middleware->handle()
#32 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(50): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#33 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Routing\\Middleware\\SubstituteBindings->handle()
#34 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(78): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#35 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle()
#36 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Session/Middleware/AuthenticateSession.php(58): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#37 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Session\\Middleware\\AuthenticateSession->handle()
#38 /var/www/myproject/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#39 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle()
#40 /var/www/myproject/app/Http/Middleware/Locale.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#41 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): App\\Http\\Middleware\\Locale->handle()
#42 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#43 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate\\Session\\Middleware\\StartSession->handleStatefulRequest()
#44 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Session\\Middleware\\StartSession->handle()
#45 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#46 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle()
#47 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(67): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#48 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle()
#49 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#50 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Router.php(723): Illuminate\\Pipeline\\Pipeline->then()
#51 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Router.php(698): Illuminate\\Routing\\Router->runRouteWithinStack()
#52 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Router.php(662): Illuminate\\Routing\\Router->runRoute()
#53 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Routing/Router.php(651): Illuminate\\Routing\\Router->dispatchToRoute()
#54 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(167): Illuminate\\Routing\\Router->dispatch()
#55 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(128): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}()
#56 /var/www/myproject/vendor/sentry/sentry-laravel/src/Sentry/Laravel/Http/SetRequestIpMiddleware.php(45): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#57 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Sentry\\Laravel\\Http\\SetRequestIpMiddleware->handle()
#58 /var/www/myproject/vendor/sentry/sentry-laravel/src/Sentry/Laravel/Http/SetRequestMiddleware.php(42): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#59 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Sentry\\Laravel\\Http\\SetRequestMiddleware->handle()
#60 /var/www/myproject/vendor/laravel/nova/src/Http/Middleware/ServeNova.php(23): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#61 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Laravel\\Nova\\Http\\Middleware\\ServeNova->handle()
#62 /var/www/myproject/vendor/fruitcake/laravel-cors/src/HandleCors.php(38): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#63 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Fruitcake\\Cors\\HandleCors->handle()
#64 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#65 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#66 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull->handle()
#67 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#68 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(40): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle()
#69 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\TrimStrings->handle()
#70 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#71 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle()
#72 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(86): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#73 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle()
#74 /var/www/myproject/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#75 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(167): Fideloper\\Proxy\\TrustProxies->handle()
#76 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(103): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}()
#77 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(142): Illuminate\\Pipeline\\Pipeline->then()
#78 /var/www/myproject/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(111): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter()
#79 /var/www/myproject/public/index.php(59): Illuminate\\Foundation\\Http\\Kernel->handle()
#80 {main}

[crynobone]

Documentation has been updated and we have updated composer.json to suggest the extension.