request.POST.getlist('xxx') only has one value in ajax request for many2many

Hi,

Using Django 3.2 and Py 3.9

I have an ajax request which submits multiple values for a field to an UpdateView.

In the request dict body I see both values (in this case, for the pool_list column):

'_body': b"csrfmiddlewaretoken=z...h&...&key=...&expiry_datetime=&overflow=555&pool_list=507&pool_list=499&...

Later in the request dict, I only see one of the values in the _post:

'_post': .... 'pool_list': ['499'],

This means that in request.POST.getlist('pool_list'), I'm only getting one result in the list object.

Any idea why it's only the last value being populated in the getlist?

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