class Top(models.Model):
name = models.CharField(max_length=128)
class Middle(models.Model):
top = models.ForeignKey(Top)
name = models.CharField(max_length=128)
class Bottom(models.Model):
middle = models.ForeignKey(Middle)
name = models.CharField(max_length=128)
class BottomInline(NestedStackedInline):
extra = 0
model = Bottom
class MiddleInline(NestedStackedInline):
model = Middle
extra = 0
inlines = [BottomInline]
class TopAdmin(NestedModel):
model = Top
inlines = [MiddleInline]
- Attempt to create a new Top object in django admin.
The `Top` model creation page has the name field and an empty group of Middle group with zero elements(expected)
But when you add a new `Middle` there is no `Bottom` group. (unexpected)
Only after saving one new `Middle` and re-editing the `Top` model again, `Bottom` Group will show (expected).
This does not happen with extra>0 in the BottomInline class
Django version 4.07
Reproduction steps:
class Middle(models.Model): top = models.ForeignKey(Top) name = models.CharField(max_length=128)
class Bottom(models.Model): middle = models.ForeignKey(Middle) name = models.CharField(max_length=128)
class BottomInline(NestedStackedInline): extra = 0 model = Bottom
class MiddleInline(NestedStackedInline): model = Middle extra = 0 inlines = [BottomInline]
class TopAdmin(NestedModel): model = Top inlines = [MiddleInline]