Hi there,
I am still pretty new to django and just trying to figure out how it
is all supposed to work.
I have the following models:
*models.py:
class Char(models.Model):
char = models.CharField(max_length=10)
variants = models.ManyToManyField("self", symmetrical=False,
through="Variant", related_name="varchars", blank=True, null=True)
class Variant(models.Model):
char = models.ForeignKey(Char)
variant = models.ForeignKey(Char, related_name="vars")
*admin.py:
class CharVarInline(admin.StackedInline):
model = Variant
fk_name = "char"
raw_id_fields=("variant", "char",)
extra = 1
class CharAdmin(admin.ModelAdmin):
inlines = (CharVarInline,)
This causes the variants part to be displayed with a char record in
admin. I also get a check-box there, which can be checked to delete
the inlined related recorded. However, when I try to used this to
delete the record and click save, the following error occurs:
ValueError at /admin/chardb/char/70524/
'Variant' instance needs to have a primary key value before a many-to-
many relationship can be used.
Apparently, something is going wrong with the deletion, which lets
part of the record hang in empty air. But I have no idea where to
look or how to fix this. Does anybody has any idea?
Any help appreciated,
Chris
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