How do I access named parameters in Flask URLs?

Accessing Named Parameters in Flask URLs

In Flask, handling named parameters in a URL is essential for extracting key-value pairs from requests.

Scenario:

Consider a Flask endpoint for user login:

http://10.1.1.1:5000/login?username=alex&password=pw1

Objective:

• Retrieve the named parameters (username and password) from the URL.

Solution:

Flask provides a powerful tool, request.args, to access named parameters from the query string:

<code class="python">from flask import request

@app.route('/login')
def login():
    username = request.args.get('username')
    password = request.args.get('password')</code>

Now, username and password hold the extracted parameter values.

Note:

• request.args is a dictionary-like object containing all query string parameters.
• request.args.get() retrieves a specific parameter value by key (parameter name).

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