#31474: QuerySet.Delete - inconsistent result when zero objects deleted
-------------------------------------+-------------------------------------
Reporter: Adi | Owner: nobody
Gabaie |
Type: | Status: new
Uncategorized |
Component: Database | Version: 2.2
layer (models, ORM) | Keywords: querySet Delete
Severity: Normal | counter
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
The result format of the QuerySet.Delete method is a tuple: (X, Y)
X - is the total amount of deleted objects (including foreign key deleted
objects)
Y - is a dictionary specifying counters of deleted objects for each
specific model (the key is the _meta.label of the model and the value is
counter of deleted objects of this model).
Example: <class 'tuple'>: (2, {'my_app.FileAccess': 1, 'my_app.File': 1})
When there are zero objects to delete in total - the result is
inconsistent:
- For models with foreign keys - the result will be: <class 'tuple'>: (0,
{})
- For "simple" models without foreign key - the result will be: <class
'tuple'>: (0, {'my_app.BlockLibrary': 0})
I would expect there will be no difference between the two cases: Either
both will have the empty dictionary OR both will have dictionary with
model-label keys and zero value.
--
Ticket URL: <https://code.djangoproject.com/ticket/31474>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/052.78dd398e027810f02e45a1aa8d02f5c9%40djangoproject.com.
