When I try to migrate my project from empty DB state, it falls into a
vicious cycle: Trying to migrate it requests Country.objects.all() because
it has form fields using PlaceWidget but this requires it to be already
migrated.
How to solve this problem?
class PlaceWidget(widgets.MultiWidget):
template_name = 'core/widgets/placewidget.html'
class Media:
js = ('js/placewidget.js',)
def __init__(self, attrs=None):
_widgets = (
widgets.Select(choices=[('', '-')] + [(c.pk, c.name) for c in
Country.objects.all().order_by('name')],
attrs={'onchange': "update_places_list(1)", **(attrs
or {})}),
widgets.Select(choices=[('', '-')],
attrs={'onchange': "update_places_list(2)", **(attrs
or {})}),
widgets.Select(choices=[('', '-')],
attrs={'onchange': "update_places_list(3)", **(attrs
or {})}),
widgets.Select(choices=[('', '-')],
attrs={'onchange': "update_places_list(4)", **(attrs
or {})}),
widgets.Select(choices=[('', '-')])
)
super().__init__(_widgets, attrs)
def decompress(self, value):
if value:
return [value['country'].pk if value['country'] else None,
value['region'].pk if value['region'] else None,
value['subregion'].pk if value['subregion'] else None,
value['city'].pk if value['city'] else None,
value['district'].pk if value['district'] else None]
return [None, None, None, None, None]
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