The Symfony Finland site has posted a new tutorial showing you how you can share state in a Symfony application between Twig, React and other Javascript-based applications.

Front end development has certainly grown up in the last few years. UI logic is increasingly being moved to the client side, but the traditional server-rendered views aren't going anywhere soon. And they shouldn't.

The two methods will live alongside each other and you'll have to work with two worlds. Let's explore an idea how to make this pleasant to work with, by sharing state between Twig templates and JavaScript.

The post starts with some background on a case where this kind of sharing was a requirement and, while the initial version was scrapped, a prototype application was born. He details what this prototype showcases (which JS libraries) and links to the Javascript involved over on GitHub. They then get into the code examples showing the creation of an AppState object that handles the serializing of the state information and store the result in the database via a Doctrine connection. This value is then output to the pages that require it, making it available to the frontend application (Vue.js, React or plain Javascript).