def __init__(self, *args, **kwargs):
    super().__init__(*args, **kwargs)
    post = self.instance
    latest_revision = post.latest()
    if latest_revision:
        self.fields['teaser'].initial = latest_revision.teaser
        self.fields['content'].initial = latest_revision.content
def __init__(self, *args, **kwargs):
    super().__init__(*args, **kwargs)
    post = self.instance
    latest_revision = post.latest()
    if latest_revision:
        self.fields['teaser'].initial = latest_revision.teaser
        self.fields['content'].initial = latest_revision.content