[Answered ]-Modelform validates and saves successfully in view…and yet it doesn't

Based on your latest update:

That’s super promising progress. That means database writes are happening, as returning that ID is a DB query.

You should print type(ohouse) as well. I have a feeling you’re not saving an OHouse object.

I see you’re passing in instance=post to each of your ModelForms, which can’t be right. That would make Host_OHouseForm({}, instance=post) return a new Post object.

I’ve got my bet that’s the problem.

  if post:
        postform=PostForm(request.POST,instance=post, prefix="post")
        tagform=TagForm(request.POST, instance=post,prefix='tags')  
        ohouse_form=Host_OHouseForm(request.POST,instance=post,prefix="ohouse")