How can I handle errors in Flask-WTF forms?

How can I handle errors in Flask-WTF forms?

You can handle errors in Flask-WTF by using the form.errors attribute to check for validation errors after form submission.

Can you show me an example of how to display these errors in a template?

Sure! In your template, you can loop through form.errors and display them like this: <code>{% for field, errors in form.errors.items() %}<div>{{ field }}: {{ errors|join(', ') }}</div>{% endfor %}</code>.

What if I want to customize the error messages?

You can customize error messages by passing a message parameter in your validators, like this: <code>validators=[DataRequired(message='This field is required.')] </code>.

Is there a way to handle errors globally for all forms?

Yes, you can create a custom error handler in your Flask app to manage errors globally. Use the @app.errorhandler decorator to define how to handle specific exceptions.