[u'ManagementForm data is missing or has been tampered with']

[minimaldev]

why i get this error when i try save my data

if request.method == "POST":
    form =ProductForm(
        data=request.POST
        )
    if  form.is_valid():
        project = form.save()
        inline_nested = inline_nested_test(instance=project,data=request.POST)

        if inline_nested.is_valid():           
            inline_nested.save() 

[nyergler]

It's most likely because you neglected to include the management form in your template (or however you're populating request.POST).

You can see how the demo app does this here: https://github.com/nyergler/nested-formset/blob/master/demo/blocks/templates/blocks/building_form.html#L9