How can I use WTForms to create forms in my web application?

How can I use WTForms to create forms in my web application?

You can use WTForms by defining form classes in Python, which represent your forms. Each class can have fields like StringField, PasswordField, etc.

Can you show me a simple example of a form using WTForms?

Sure! Here's a basic example:

from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField

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

How do I validate the form data?

You can add validators to your fields. For example, to require the name field, you can use DataRequired():

from wtforms.validators import DataRequired

class MyForm(FlaskForm):
    name = StringField('Name', validators=[DataRequired()])

What if I want to add more fields?

You can simply add more fields to your form class. For instance, you can add an email field like this:

email = StringField('Email', validators=[DataRequired()])