README

This package contains abstractions to add loose Encore bundle support.

Usage

Register entrypoints

To register encore entrypoints create an EncoreExtension class implementing EncoreExtensionInterface.

namespace HeimrichHannot\ExampleBundle\Asset;

use HeimrichHannot\EncoreContracts\EncoreEntry;
use HeimrichHannot\EncoreContracts\EncoreExtensionInterface;
use HeimrichHannot\ExampleBundle\HeimrichHannotExampleBundle;

class EncoreExtension implements EncoreExtensionInterface
{
 public function getBundle(): string
 {
 // Return the bundle class
 return HeimrichHannotExampleBundle::class;
 }

 public function getEntries(): array
 {
 // Return the bundle entries
 return [
 EncoreEntry::create('main-theme', 'assets/main/js/main-theme.js')
 ->setRequiresCss(true)
 ->setIsHeadScript(false),
 EncoreEntry::create('one-pager', 'assets/one-pager/js/one-pager.js')
 ->setRequiresCss(true),
 EncoreEntry::create('custom-head-js', 'assets/main/js/head.js')
 ->setIsHeadScript(true)
 // Define entries that will be removed from the global asset array
 ->addJsEntryToRemoveFromGlobals('colorbox')
 ->addCssEntryToRemoveFromGlobals('css-to-replace'),
 ->setDefer(true)
 ];
 }
}

Add entrypoints for current page

To add entrypoints (must be registered beforehand) from your code, you can use the PageAssetsTrait. It checks if encore bundle is installed and add the entry, if this is the case. Otherwise, it adds the fallback assets to the contao global asset array.

Make your class implement ServiceSubscriberInterface and use PageAssetsTrait (it already implements the needed methods for the ServiceSubscriberInterface). Afterwards just call $this->addPageEntrypoint(string $name, array $fallbackAssets = []).

use HeimrichHannot\EncoreContracts\PageAssetsTrait;
use Symfony\Contracts\Service\ServiceSubscriberInterface;

class FrontendController implements ServiceSubscriberInterface
{
 use PageAssetsTrait;
 
 public function __invoke()
 {
 $this->addPageEntrypoint(
 // Encore entry point name
 'contao-example-bundle', 
 // Optional: define fallback assets to use if encore bundle is not installed
 [
 'TL_CSS' => ['main-theme' => 'assets/main/dist/main-theme.min.css|static'],
 'TL_JAVASCRIPT' => [
 'main-theme' => 'assets/main/dist/main-theme.min.js|static',
 'some-dependency' => 'assets/some-dependency/some-dependency.min.js|static',
 ],
 ]
 );
 }
}

If implementing the ServiceSubscriberInterface is not possible, you can use the AddPageEntrypointTrait, which also provides the addPageEntrypoint method, but requires you to implement the getFrontendAsset method, which should return the FrontendAsset service object.

use HeimrichHannot\EncoreBundle\Asset\FrontendAsset;
use HeimrichHannot\EncoreContracts\AddPageEntrypointTrait;

class MyService
{
 use AddPageEntrypointTrait;
 
 public function __construct(private readonly FrontendAsset $frontendAsset) {}
 
 protected function getFrontendAsset(): FrontendAsset
 {
 return $this->frontendAsset;
 }
 
 public function myAction()
 {
 $this->addPageEntrypoint(
 // Encore entry point name
 'contao-example-bundle'
 );
 }
}