Obviously a difficult question...
On Saturday, 3 October 2015 23:54:24 UTC+1, Dan Tagg wrote:
>
> Hi,
>
> I'm using django 1.8.4.
>
> 1. I have added a field "deleted" to a couple of models so that when the
> delete button is pressed, to all intents and purposes the record will have
> been deleted, although it should still be accessible through the Admin
> site.
>
> 2. To make this happen in a way that can't be easily accidentally ignored
> I have overiden "get_queryset in this manner
>
> class AnnotationManager(models.Manager):
> def get_queryset(self):
> return super(AnnotationManager,
> self).get_queryset().filter(deleted=False)
>
> and then had
> objects = managers.AnnotationManager()
>
> in the Model
>
> 3. I am also using AutoSlugField. To make sure that doesn't give an
> integrity error I have had to add another manager AllAnnotationManager and
> get the AutoSlugField to use it by adding the following keyword argument
>
> manager=managers.AllAnnotationManager()
>
> This works fine as far as integrity is concerned
>
> 4. However, if I run makemigrations, I get the following errors
>
> File "manage.py", line 10, in <module>
> execute_from_command_line(sys.argv)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/core/management/__init__.py",
>
> line 338, in execute_from_command_line
> utility.execute()
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/core/management/__init__.py",
>
> line 330, in execute
> self.fetch_command(subcommand).run_from_argv(self.argv)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/core/management/base.py",
>
> line 393, in run_from_argv
> self.execute(*args, **cmd_options)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/core/management/base.py",
>
> line 444, in execute
> output = self.handle(*args, **options)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/core/management/commands/makemigrations.py",
>
> line 125, in handle
> migration_name=self.migration_name,
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 43, in changes
> changes = self._detect_changes(convert_apps, graph)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 186, in _detect_changes
> self.generate_altered_fields()
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 849, in generate_altered_fields
> new_field_dec = self.deep_deconstruct(new_field)
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 67, in deep_deconstruct
> for key, value in kwargs.items()
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 67, in <dictcomp>
> for key, value in kwargs.items()
> File
> "/Users/dantagg/envs/cr_3.4/lib/python3.4/site-packages/django/db/migrations/autodetector.py",
>
> line 61, in deep_deconstruct
> path, args, kwargs = deconstructed
> ValueError: too many values to unpack (expected 3)
>
> The 5 deconstructed values that are causing the problem are
> False
> conciliation_resources_db.managers.AllAnnotationManager
> None
> ()
> {}
>
> The object whose deconstruct method is causing the problem is
>
> <class 'conciliation_resources_db.managers. AllAnnotationManager'>
>
> Why is the manager's deconstruct method being called and how do I stop it?
>
> Dan
>
>
>
>
>
> --
> Wildman and Herring Limited, Registered Office: 52 Great Eastern Street,
> London, EC2A 3EP, Company no: 05766374
>
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