What are some examples of using Flask-WTF in a web application?

What are some examples of using Flask-WTF in a web application?

Flask-WTF is an extension for Flask that integrates WTForms. It simplifies form handling. Would you like to see a specific example?

Yes, can you show me a simple form example?

Sure! Here's a basic example of a contact form using Flask-WTF:

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

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

class ContactForm(FlaskForm):
    name = StringField('Name', validators=[DataRequired()])
    submit = SubmitField('Submit')

@app.route('/contact', methods=['GET', 'POST'])
def contact():
    form = ContactForm()
    if form.validate_on_submit():
        # Process the data
        return redirect(url_for('success'))
    return render_template('contact.html', form=form)

if __name__ == '__main__':
    app.run(debug=True)

This creates a simple contact form with a name field.

How do I render this form in a template?

You can render the form in your HTML template like this:

<form method="POST">
    {{ form.hidden_tag() }}
    <p>{{ form.name.label }} {{ form.name(size=32) }}</p>
    <p>{{ form.submit() }}</p>
</form>

This will display the form fields and the submit button.