Is template rendering and forms in Flask used with SPA frontend?
Question:
let’s assume I have created SPA style frontend (React). How should I host it with a Flask app? Should i return json data from flask app? Are Flask templates and forms still used (e.g. FLask-WTF) with SPA? Or is Flask backend currently created only based on jwt tokens (login system…)?
What is the common approach nowadays?
I would like some examples of how to do this.
Answers:
Flask isn’t really relevant if you just have it "return JSON". This just makes it a backend API, which you need browser AJAX/fetch calls to get data back and render it from the browser. That could be hosted in any framework/language.
Otherwise, you can do server-side rendering from Jinja2 tempaltes that include div DOM elements, which then are populated dynamically on the client-side by React. However, you’ll find you get better performance by serving the React bundle from a static web server such as Nginx, then put Flask instance(s) behind a load-balancer.
JWT is not really relevant either, but sure, if you have some login form, or authentication mechanism, then you can use them.
let’s assume I have created SPA style frontend (React). How should I host it with a Flask app? Should i return json data from flask app? Are Flask templates and forms still used (e.g. FLask-WTF) with SPA? Or is Flask backend currently created only based on jwt tokens (login system…)?
What is the common approach nowadays?
I would like some examples of how to do this.
Flask isn’t really relevant if you just have it "return JSON". This just makes it a backend API, which you need browser AJAX/fetch calls to get data back and render it from the browser. That could be hosted in any framework/language.
Otherwise, you can do server-side rendering from Jinja2 tempaltes that include div DOM elements, which then are populated dynamically on the client-side by React. However, you’ll find you get better performance by serving the React bundle from a static web server such as Nginx, then put Flask instance(s) behind a load-balancer.
JWT is not really relevant either, but sure, if you have some login form, or authentication mechanism, then you can use them.