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How to get composer.json data in block in magento 2

Ajay Singh
Published: January 11, 2023

In this blog, we will try to learn about getting the composer.json data saved in Magento 2 module.

In Magento 2 we define the composer.json file for the particular module, which will define the module versioning and dependencies of the module, and so on.

Now, to get saved information from the composer.json file we will see the file in the file path \Magento\Framework\Component\ComponentRegistrarInterface
Here we will find the method named as
create($path) which will help us to get the data in a user-defined block file.

Now, we will see how we can achieve this.

class ComposerVersion extends \Magento\Config\Block\System\Config\Form\Field {

    public function __construct(
        \Magento\Framework\View\Asset\Repository $assetRepo,
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Framework\App\DeploymentConfig $deploymentConfig,
        \Magento\Framework\Component\ComponentRegistrarInterface $componentRegistrar,
        \Magento\Framework\Filesystem\Directory\ReadFactory $readFactory,
        array $data = []
    ) {
        $this->_assetRepo = $assetRepo;
        $this->deploymentConfig = $deploymentConfig;
        $this->componentRegistrar = $componentRegistrar;
        $this->readFactory = $readFactory;
        parent::__construct($context, $data);
    public function render(\Magento\Framework\Data\Form\Element\AbstractElement $element) {
        $moduleName = 'Vendor_Module';
        $path = $this->componentRegistrar->getPath(
        $directoryRead = $this->readFactory->create($path);
        $composerJsonData = $directoryRead->readFile('composer.json');
        $data = json_decode($composerJsonData);
        return $data;

Now you can use this block as per your requirement.