Field 'id' expected a number but got ['99'].

[gassan]

If I have some ChoiceWidget on the formset. So prepares the function self.empty_form[field_name].field.widget.format_value(self.empty_form[field_name].value())
an array [99] for that value. Here are for example 2 Choice fields: food' and unit: {'food': ['99'], 'qty': '6', 'unit': ['2'], 'block': '0', 'extra': '', 'id': '82', 'ORDER': '1', 'DELETE': None}.
That error occurs when the form is sent without having edited anything

[noampolak]

I have the same issue
my workaround was to edit the package:
in the file edit_handlers.py I replaced line
edit_handlers.py
obj = model.objects.filter(pk=value).first()
to:

try: obj = model.objects.filter(pk=value).first() except: obj = model.objects.filter(pk=int(value[0])).first()

I had to add the 2 options because of compatibility with my old objects

[gassan]

I have forked it and changed 2 lines of code.
https://github.com/gassan/wagtail-condensedinlinepanel

[nusol-sc]

My workaround has been to reverse the orders of the assignments when building the fields list in both 'forms' and 'emptyForm'. It may not be the best fix, but it seems to work fine for now:

Before

field_name: form[field_name].field.widget.format_value(form[field_name].value()) or form[field_name].value()
field_name: self.empty_form[field_name].field.widget.format_value(self.empty_form[field_name].value()) or self.empty_form[field_name].value()

After

field_name: form[field_name].value() or form[field_name].field.widget.format_value(form[field_name].value())
field_name: self.empty_form[field_name].value() or self.empty_form[field_name].field.widget.format_value(self.empty_form[field_name].value())