Redirect to a URL in Flask

url_for() Function in Flask

A redirect is used in the Flask class to send the user to a particular URL with the status code. conversely, this status code additionally identifies the issue. When we access a website, our browser sends a request to the server, and the server replies with what is known as the HTTP status code, which is a three-digit number.

Syntax of Redirect in Flask

Syntax: flask.redirect(location,code=302)

Parameters:

location(str): the location which URL directs to.

code(int): The status code for Redirect.

Code: The default code is 302 which means that the move is only temporary.

Return: The response object and redirects the user to another target location with the specified code.

The different types of HTTP codes are:

Code	Status
300	Multiple_choices
301	Moved_permanently
302	Found
303	See_other
304	Not_modified
305	Use_proxy
306	Reserved
307	Temporary_redirect

How To Redirect To Url in Flask

In this example, we have created a sample flask application app.py. It has two routes, One is the base route \ and another is \helloworld route. Here when a user hits the base URL \ (root) it will redirect to \helloworld.

app.py

Python3

# import flast module
from flask import Flask, redirect
 
# instance of flask application
app = Flask(__name__)
 
# home route that redirects to 
# helloworld page
@app.route("/")
def home():
    return redirect("/helloworld")
 
# route that returns hello world text
@app.route("/helloworld")
def hello_world():
    return "<p>Hello, World from \
                redirected page.!</p>"
 
 
if __name__ == '__main__':
    app.run(debug=True)

Output:

We hit the base URL in the browser as shown below. As soon we hit the URL flask application returns the redirect function and redirects to the given URL.

Redirecting to URL in Flask

Flask is a backend server that is built entirely using Python. It is a framework that consists of Python packages and modules. It is lightweight which makes developing backend applications quicker with its features. In this article, we will learn to redirect a URL in the Flask web application.

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#python #Python Flask #Technical Scripter 2022 #Python #Technical Scripter #python #python