Opened 5 years ago

Last modified 5 years ago

#31282 closed Bug

RelatedManager.set(..) no longer accepts a list of PKs — at Version 2

Reported by: Yu Li Owned by: nobody
Component: Documentation Version: 3.0
Severity: Release blocker Keywords:
Cc: Tobias Kunze Triage Stage: Ready for checkin
Has patch: yes Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description (last modified by Yu Li)

It seems that I can no longer pass a list of pks to RelatedManager.set(..).
Alternatively, passing a list of objects works as expected.

>>> p = Product.objects.all()[0]
>>> p
<Product: <Product pk=587 barcode=041390007019>>
>>> p.images.set([1])
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 750, in set
    self.add(*objs, bulk=bulk)
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 656, in add
    check_and_update_obj(obj)
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 648, in check_and_update_obj
    raise TypeError("'%s' instance expected, got %r" % (
TypeError: 'ProductImage' instance expected, got 1

class Product(m.Model):
    ...

class ProductImage(m.Model):
    product = m.ForeignKey(
        Product,
        on_delete=m.CASCADE,
        related_name='images',
    )

Change History (2)

comment:1 by Yu Li, 5 years ago

Description: modified (diff) 
>>> i = ProductImage.objects.get(pk=100)
>>> p.images.set([100])
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 750, in set
    self.add(*objs, bulk=bulk)
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 656, in add
    check_and_update_obj(obj)
  File "/usr/local/lib/python3.8/dist-packages/django/db/models/fields/related_descriptors.py", line 648, in check_and_update_obj
    raise TypeError("'%s' instance expected, got %r" % (
TypeError: 'ProductImage' instance expected, got 100

However, this works fine:

p.images.set([i])

comment:2 by Yu Li, 5 years ago

Description: modified (diff)
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