How can I create custom widgets in WTForms?

How can I create custom widgets in WTForms?

To create custom widgets in WTForms, you can subclass the existing widgets and override their methods.

Can you give me an example of a custom widget?

Sure! Here's a simple example of a custom checkbox widget:

from wtforms.widgets import CheckboxInput

class CustomCheckbox(CheckboxInput):
    def __call__(self, field, **kwargs):
        kwargs['class'] = 'custom-checkbox'
        return super().__call__(field, **kwargs)

How do I use this custom widget in a form?

You can use the custom widget by specifying it in your form field like this:

class MyForm(FlaskForm):
    my_checkbox = BooleanField('My Checkbox', widget=CustomCheckbox())

What if I want to add custom styling?

You can add custom CSS classes in the __call__ method of your widget to apply your styles.