How to generate PDF in Symfony 4.2
Nowadays, PDF generation is a much-needed feature for every e-commerce website. Whether we need to create an invoice or a set of guidelines for a product, this feature is a must-have for your website. In a recent Symfony based project, I had to work on creating PDF from HTML in Twig and CSS and I am going to share the step by step approach that I followed for the purpose.
Installing Symfony 4.2:
For this tutorial, I am going to show the installation of the Symfony 4.2 (latest version) using composer and you need to run the following command for the purpose:
composer create-project symfony/website-skeleton pdf
￼After installation, use the PHP built-in webserver command to run the project as mentioned below:
php bin/console server:run
Open the browser and navigate to:
Installing PDF library:
To install Snappy, the following command has to be executed in the terminal:
composer require knplabs/knp-snappy-bundle
In order to run and use Snappy, we need to install wkhtmltopdf 0.12.x (available for OSX, Linux and Windows) by running the following command:
sudo apt-get install wkhtmltopdf
Now we have to enable KnpSnappybundle in bundles of Symfony as follows:
Next, we need to add the Snappy config to the bin path
Create file knp_snappy.yaml in /config/packages
Note: binary path may vary.
Generating PDF from Twig
Now that all the requirements have been fulfilled, we can start to generate PDF from Twig file. I created DefaultController.php and pdf template.html.twig for this tutorial.
We are good to go now! Just hit the URL http://127.0.0.1:8000/pdf and you will get a prompt to download a pdf file.
After you have downloaded pdf, you can see the HTML we set in /templates/pdf_template.html.twig
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