[Answered ]-Accessing model fields in django template

You’re trying to compare a boolean value to a string. Your Event-model’s homepage is a BooleanField. Try:

{% if not event.homepage %}

See also:

https://docs.djangoproject.com/en/dev/ref/templates/builtins/#boolean-operators
https://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.BooleanField