split_podcast_blog.py

def blog_to_podcast(blog, content_type):
    exclude = {"id", "page_ptr_id", "page_ptr", "translation_key"}
    kwargs = {
        f.name: getattr(blog, f.name)
        for f in Blog._meta.fields
        if f.name not in exclude
    }
    kwargs["slug"] = f"new_{blog.slug}"
    kwargs["content_type"] = content_type
    kwargs["new_itunes_artwork"] = blog.itunes_artwork
    kwargs["new_itunes_categories"] = blog.itunes_categories
    kwargs["new_keywords"] = blog.keywords
    kwargs["new_explicit"] = blog.explicit
    return Podcast(**kwargs)

blog = Blog.objects.first()
original_slug = blog.slug
blog_parent = Page.objects.parent_of(blog).first()

# fix hostname and port
site = Site.objects.first()
site.hostname = "localhost"
site.port = 8000
site.save()

# create new page
podcast_content_type = ContentType.objects.get(app_label="cast", model="podcast")
podcast = blog_to_podcast(blog, podcast_content_type)
podcast = blog_parent.add_child(instance=podcast)
podcast = Podcast.objects.first()  # super important!

# fix treebeard, dunno why this is needed
from django.core.management import call_command
call_command("fixtree")
podcast = Podcast.objects.first()  # super important!

# move children - this is extremely brittle!
from wagtail.actions.move_page import MovePageAction
for child in blog.get_children():
    mpa = MovePageAction(child, podcast, pos="last-child")
    mpa.execute()

# delete old page
blog.delete()

# restore slug
podcast.slug = original_slug
podcast.save()