from django import forms

from slides import models


class VisibilityField(forms.CharField):
    def validate(self, value):
        if value not in [
            models.VISIBILITY_EVERYONE,
            models.VISIBILITY_TEAM,
            models.VISIBILITY_ONLY_ME,
        ]:
            raise forms.ValidationError(
                f"Invalid visibility value, {value}, "
                f"allowed values: {models.VISIBILITY_EVERYONE}, {models.VISIBILITY_TEAM}, {models.VISIBILITY_ONLY_ME}"
            )