On Oct 11, 12:38 pm, Kristaps Kūlis <kristaps.ku...@gmail.com> wrote:
> There can be multiple associated Model2 objects to Model1, but without one
> Model2 Model1 cannot exist.
>
> Kristaps Kūlis
The best bet is to define custom validation for your inline formset,
to ensure that there's at least one valid entry.
class Model2InlineFormset(forms.models.BaseInlineFormSet):
def clean(self):
# get forms that actually have valid data
count = 0
for form in self.forms:
try:
if form.cleaned_data:
count += 1
except AttributeError:
# annoyingly, if a subform is invalid Django explicity
raises
# an AttributeError for cleaned_data
pass
if count < 1:
raise forms.ValidationError('You must have at least one
order')
class Model2Inline(admin.StackedInline):
formset = Model2InlineFormset
class Model1Admin(admin.ModelAdmin):
inlines = [Model2Inline]
--
DR.
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