How can I use WTForms with AJAX?

How can I use WTForms with AJAX to submit forms without reloading the page?

You can use WTForms with AJAX by creating a form in your HTML, then using JavaScript to handle the submission. First, ensure you have jQuery or another AJAX library included.

Can you show me a code example for that?

Sure! Here's a simple example:

<form id="myForm" method="POST" action="/submit">
    {{ form.hidden_tag() }}
    {{ form.name.label }} {{ form.name() }}
    <input type="submit" value="Submit">
</form>
<script>
$(document).ready(function() {
    $('#myForm').on('submit', function(e) {
        e.preventDefault();
        $.ajax({
            type: 'POST',
            url: $(this).attr('action'),
            data: $(this).serialize(),
            success: function(response) {
                alert('Form submitted successfully!');
            },
            error: function() {
                alert('Error submitting form.');
            }
        });
    });
});

This code prevents the default form submission and sends the data via AJAX.

What backend framework should I use with WTForms?

WTForms is commonly used with Flask or Django. Both frameworks have great support for WTForms and can handle AJAX requests effectively.