How to add Bootstrap Validation to WTForms
问题 I am using WTForms in conjunction with Flask and I would like to integrate the Bootstrap Form Validation for errors in my form. I have a basic login form setup something like this: class LoginForm(FlaskForm): """Login form.""" email = EmailField( "Email Address", validators=[DataRequired(), Email(), Length(min=6, max=40)] ) password = PasswordField( "Password", validators=[DataRequired()] ) def __init__(self, *args, **kwargs): """Create instance.""" super(LoginForm, self).__init__(*args, *