Flask-Security registration with pending role

views.py

from flask_security.decorators import anonymous_user_required
from flask_security.utils import encrypt_password
from flask_security.confirmable import send_confirmation_instructions

@bp.route('/register/', methods=['GET', 'POST'])
@anonymous_user_required
def register():
    form = ExtendedRegistrationForm(request.form)

    if form.validate_on_submit():
        form_data = form.to_dict()
        form_data['password'] = encrypt_password(form_data['password'])
        user = security.datastore.create_user(**form_data)
        
        # Do stuff to register the user

        pending_role = security.datastore.find_role('pending')
        security.datastore.add_role_to_user(user, pending_role)
        security.datastore.commit()

        send_confirmation_instructions(user)
        flash('Thank you for registering. Please check your inbox for a confirmation email and click the link inside.')
        
        return redirect(url_for('security.login'))

    return render_template('register_user.html', title='Register', register_user_form=form)