object
When using UpdateView you have access to self.object, which is the object being updated.
Example myapp/views.py:
from django.views.generic.edit import UpdateView
from myapp.models import Author
class AuthorUpdate(UpdateView):
model = Author
fields = ['name']
template_name_suffix = '_update_form'
Example myapp/author_update_form.html:
<form action="" method="post">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Update" />
</form>