Thanks for the reply.
Sadly in the process of me messing around with, I somehow fixed it. I'm not
sure how, but when I get a chance I'll look through my changes and see what did
it.
In the meantime, I'm going to claim user error until I can figure it out.
Thanks,
Matthew Stroud
On 8/29/18, 5:33 AM, "django-users@googlegroups.com on behalf of Michal
Petrucha" <django-users@googlegroups.com on behalf of
michal.petru...@koniiiik.org> wrote:
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On Mon, Aug 27, 2018 at 09:37:03AM -0700, mattstroud via Django users wrote:
> So when we started the database, it was good enough to have a char field
> with choices. But as time progressed I need to convert that field to a
> foreign key field. The follow I'm trying to take is such:
>
>
> 1. rename <fieldname> to tmp_<fieldname>
> 2. create a new field with <fieldname>
> 3. have a RunPython fill the data for <fieldname>
> 4. delete field tmp_<fieldname>
>
> I can get steps 1 through 3 to work with out issue. But once I remove the
> old field from the code, the migration breaks because the field no longer
> exists (which makes sense). I'm curious if there is a way to work around
> this, because my googling is coming up empty.
I'm not following – why would the migration break? What part of it
would break, and how? None of what you wrote suggests that this should
in any way fail, as long as operations 1, 2, and 4 are performed with
AlterField, AddField, and RemoveField, and you use model classes
passed into RunPython through the ``apps`` argument.
Could you perhaps provide some more details about the failure that
you're experiencing?
Michal
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