python flask flash message

Published: 03 February 2024
on channel: CodeDash

Download this code from https://codegive.com
Flash messages are a convenient way to provide feedback to users in web applications. In Flask, the flash function is used to store a message that can be retrieved and displayed on the next request. This tutorial will guide you through the process of implementing flash messages in a Flask application with a simple code example.
First, make sure you have Flask installed. If not, you can install it using:
Now, create a new Python file (e.g., app.py) and set up a basic Flask application:
Replace 'your_secret_key' with a strong, random secret key.
Let's create two routes: one for displaying a form and another for processing the form submission.
Here, we use the flash function to store a message and the message type (e.g., 'success' or 'error'). The messages will be displayed on the next request.
Create a templates folder in the same directory as your Python file and add two HTML files: index.html and layout.html.
Now, you can run your Flask app:
Visit http://127.0.0.1:5000/ in your browser, and you should see the flash messages example. Enter a username and submit the form to see the flash message in action.
Congratulations! You've successfully implemented flash messages in a Flask application.
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