Add a css class to a field in wtform

Question

I\'m generating a dynamic form using wtforms (and flask). I\'d like to add some custom css classes to the fields I\'m generating, but so far I\'ve been unable to do so. Usin

Answer 1

In WTForms 2.1 I using extra_classes, like the line bellow:

1. The first way

{{ f.render_form_field(form.email, extra_classes='ourClasses') }}

We can also use @John Go-Soco answers to use render_kw attribute on our form field, like this way.

2. The second way

style={'class': 'ourClasses', 'style': 'width:50%;'}
email = EmailField('Email', 
                   validators=[InputRequired(), Length(1, 64), Email()],
                   render_kw=style)

But I would like more prefer to use the first way.