How do I handle forms in Flask?

How do I handle forms in Flask?

In Flask, you can handle forms using the Flask-WTF extension, which simplifies form handling and validation.

What are the steps to set up Flask-WTF?

First, install Flask-WTF, then create a form class by inheriting from Flask-WTF's Form class, and finally use it in your routes.

Can you show me a simple example?

Sure! Here's a basic example:

from flask import Flask, render_template, redirect, url_for
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField

app = Flask(__name__)
app.config['SECRET_KEY'] = 'your_secret_key'

class MyForm(FlaskForm):
    name = StringField('Name')
    submit = SubmitField('Submit')

@app.route('/', methods=['GET', 'POST'])
def home():
    form = MyForm()
    if form.validate_on_submit():
        return redirect(url_for('success'))
    return render_template('form.html', form=form)

@app.route('/success')
def success():
    return 'Form submitted successfully!'

What if I want to add validation to my form?

You can add validation by using WTForms validators. For example, you can use DataRequired() to ensure a field is not empty.