Flask Forms

Flask Forms — a practical guide to Flask forms with clear examples you can reuse in real projects.

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Short description

Read `request.form`, validate fields, then redirect with flash messages on success.

Form POST

from flask import request, redirect, url_for, flash

@app.route('/contact', methods=['GET', 'POST'])
def contact():
    if request.method == 'POST':
        email = request.form.get('email', '').strip()
        if not email:
            flash('Email required')
            return redirect(url_for('contact'))
        flash('Thanks!')
        return redirect(url_for('contact'))
    return render_template('contact.html')