disable/enable/hide form elements dependent on input in another element

[PHvL]

Hi,
Thanks for this great tool.

We often have forms where some questions do not make sense if a question was answered in a specific way before. For example, on a feedback form to an invitation, we ask if the invitee will attend the event (a required bool field), and if they attend, we ask how many guests they will bring with them (an optional int field):

from typing import Annotated, Optional
from pydantic import BaseModel, Field
from fastui import components as c

class Feedback(BaseModel):
	attendance: Annotated[bool, Field(title='I will attend the ceremony.')]
	attendees_count: Annotated[Optional[int], Field(title='I will be accompanied by (max 5) additional guest(s).')] = None

c.ModelForm(submit_url='./answer', model=Feedback)

Is it possible to disable/enable or maybe even hide/unhide form element attendees_count depending on the value of attendance?