# CSS / JavaScript

When building custom Nova tools, resource tools, cards, and fields, you may use a variety of helpers that are globally available to your JavaScript components.

# Nova Requests

You may use the Nova.request() method to make XHR requests to backend routes provided by your application or custom tools, cards, and fields. The Nova.request() method is powered by Axios (opens new window) and offers the same API. However, the Nova.request() method configures its own instance of Axios that has pre-configured interceptors to properly handle and redirect on 401, 403, and 500 level HTTP server responses:

Nova.request().get('/nova-vendor/stripe-inspector/endpoint').then(response => {
    // ...
})

# Event Bus

The global Nova JavaScript object may be used as an event bus by your custom components. The bus provides the following methods, which correspond to and have the same behavior as the event methods provided by tiny-emitter (opens new window):

Nova.$on(event, callback)
Nova.$once(event, callback)
Nova.$off(event, callback)
Nova.$emit(event, [...args])

# Notifications

You may display toast notification to users of your custom frontend components by calling the success, error, info, or warning methods on the global Nova object:

Nova.success('It worked!')
Nova.error('It failed!')

# Shortcuts

Nova provides two convenience methods for managing keyboard shortcuts, powered by Mousetrap (opens new window). You may use these methods within your custom components to register and unregister shortcuts:

// Add a single keyboard shortcut...
Nova.addShortcut('ctrl+k', event => {
    // Callback...
})

// Add multiple keyboard shortcuts...
Nova.addShortcut(['ctrl+k', 'command+k'], event => {
    // Callback...
})

// Add a sequence shortcut...
Nova.addShortcut('* a', event => {
    // Callback...
})

// Remove a shortcut...
Nova.disableShortcut('ctrl+k')

// Remove multiple shortcuts...
Nova.disableShortcut(['ctrl+k', 'command+k'])

# Global Variables

The global Nova JavaScript object's config method allows you to get the current Nova base path and userId configuration values:

const userId = Nova.config('userId');
const basePath = Nova.config('base');

However, you are free to add additional values to this object using the Nova::provideToScript method. You may call this method within a Nova::serving listener, which should typically be registered in the boot method of your application or custom component's service provider:

use Laravel\Nova\Nova;
use Laravel\Nova\Events\ServingNova;

/**
 * Bootstrap any application services.
 *
 * @return void
 */
public function boot()
{
    Nova::serving(function (ServingNova $event) {
        Nova::provideToScript([
            'mail_driver' => config('mail.default'),
        ]);
    });
}

Once the variable has been provided to Nova via the provideToScript method, you may access it using the global Nova JavaScript object's config method:

const driver = Nova.config('mail_driver');

# Localizations

Localization strings can be passed to the frontend via your NovaServiceProvider. To learn more, please consult the full custom localization documentation.

# Using Nova Mixins

Custom Nova tools, resource tools, cards, and other custom packages that are being developed within a nova-components directory of a Laravel application can reference Nova's own packages.js file by defining a laravel-nova alias that points to this file within the Nova installation that is located within your root application's vendor directory. This alias should be placed in your package's nova.mix.js:

'laravel-nova': path.join(
  __dirname,
  '../../vendor/laravel/nova/resources/js/mixins/packages.js'
),

Custom Nova packages that are developed outside of a nova-components directory should declare laravel/nova as a "dev" Composer dependency. Then, define a laravel-nova Mix alias that points to the packages.js file within your custom package's vendor directory:

'laravel-nova': path.join(
  __dirname,
  'vendor/laravel/nova/resources/js/mixins/packages.js'
),

In order to compile custom packages assets with laravel-nova mixins you are required to prepare laravel/nova's node_modules by running the following command:

npm run nova:install

# Or use the explicit command...
npm --prefix='vendor/laravel/nova' ci

# Vue DevTools

By default, Nova's JavaScript is compiled for production. As such, you will not be able to access the Vue DevTools out of the box without compiling Nova's JavaScript for development. To accomplish this, you may issue the following terminal commands from the root of your Nova project:

cd ./vendor/laravel/nova
mv webpack.mix.js.dist webpack.mix.js
npm install
npm run dev
rm -rf node_modules
cd -
php artisan nova:publish

Please note, compiling Nova's assets for production purposes is not supported.