Random stuff, testing things, and so on.
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from django import forms
from django.contrib import admin
from django.core.exceptions import ValidationError
from .models import Child
from .models import Parent
class ChildInlineFormset(forms.models.BaseInlineFormSet):
def clean(self):
sum = 0
for form in self.forms:
if (
form.is_valid()
and "proportion" in form.cleaned_data
and not form.cleaned_data["DELETE"]
):
sum += form.cleaned_data["proportion"]
print(f">>> total proportion: {sum}")
if sum > 100:
raise ValidationError("Invalid proportion")
class ChildAdmin(admin.TabularInline):
model = Child
formset = ChildInlineFormset
@admin.register(Parent)
class ParentAdmin(admin.ModelAdmin):
inlines = [ChildAdmin]