Django Formset without instance

Question

In this Django Doc explain how to create a formset that allows you to edit books belonging to a particular author.

What I want to do is: Create a formset that allows you to ADD new book belonging to a NEW author... Add the Book and their Authors in the same formset.

Can you gime a light? thanks.

Daniel Roseman · Accepted Answer · 2009-08-12 22:47:28Z

14

When you're instantiating the form and formset for the initial display, you don't need to provide an instance - so you will just get blank forms.

When you pass in the data on POST, you can do the form first, save it, and get an instance. Then you can pass that instance into the formset, so that it correctly saves the related objects.

answered Aug 12, 2009 at 22:47

Daniel Roseman

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panchicore Over a year ago

Thanks, lights: if request.method == "POST": bookform = BookForm(request.POST) b = bookform .save(commit=False) b.save() formset = PadreFormSet(request.POST, request.FILES, instance=b) if formset.is_valid(): formset.save() It worked for me, Thanks!

brianz · Accepted Answer · 2009-08-12 19:11:15Z

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This depends on whether you're doing it yourself, or using the built-in admin.

If you're using the admin, you can use inlines.

If you're doing this in your own application, then it's up to you. Create a single form which has fields for a new author and book. When the user submits the form, it's your job to create the new records.

answered Aug 12, 2009 at 19:11

brianz

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