Thanks Josh. I'll give that a try tonight. If I moved the migration out
of that folder, it worked, so I'm hopeful that your suggestion will do the
trick.
On Saturday, April 18, 2015 at 11:21:44 AM UTC-4, Josh Cartmell wrote:
>
> Hi Keith and Ken, I think I understand what is going on and you actually
> are very close to doing the right thing. When you create migrations for an
> EXTRA_MODEL_FIELD and store them in a separate app they actually are run
> using that other apps name, so that part was correct. If there was a
> transcription error, my guess is that blog in the schemamigration command
> should have read mezzanine.blog, not just blog. It may be that it gets
> picked up either way.
>
> My recommendation is to store EXTRA_MODEL_FIELD migrations in an app of
> their own that you don't use for anything besides the EXTRA_MODEL_FIELDS
> modifications. I would create an app called blog_mods (I like to place it
> inside my theme app) and then keep the migrations there.
>
> Doing that will keep theme's migrations totally separate and should avoid
> the error you encountered.
>
> So your theme directory structure would look like:
>
> - theme
> - blog_mods
> - migrations (these are the EXTRA_MODEL_FIELD_MIGRATIONS)
> ... other files like admin.py, models.py, etc) ...
> -migrations (these are theme's migrations)
> ... other files like admin.py, models.py, etc) ...
>
> You will need to add theme.blog_mods to your INSTALLED_APPS setting.
> After creating the migrations you would run:
>
> $ python manage.py migrate theme.blog_mods
>
> You can also then use blog_mods.admin to do any monkey patching to get
> your new field[s] to show up.
>
> Good luck!
>
> On Sat, Apr 18, 2015 at 9:45 AM, Ken Bolton <kenb...@gmail.com
> <javascript:>> wrote:
>
>> Hi Keith,
>>
>> Your schemamigration is for the app "blog", but then you are attempting
>> to migrate the app "theme". Let us know if that was simply a transcription
>> error or the root cause of your issue.
>>
>> hth,
>> ken
>>
>> On Sat, Apr 18, 2015 at 2:48 AM, Keith Eberle <keith....@gmail.com
>> <javascript:>> wrote:
>>
>>> I'm having trouble with a subsequent schema migration after I used
>>> EXTRA_MODEL_FIELDS:
>>>
>>> EXTRA_MODEL_FIELDS = (
>>> (
>>> "mezzanine.blog.models.BlogPost.gallery",
>>> "ForeignKey",
>>> ("galleries.Gallery",),
>>> {'blank': True, 'null': True},
>>> ),
>>> )
>>>
>>>
>>> Then as indicated in the mezzanine docs, I ran:
>>>
>>> $ python manage.py schemamigration blog --auto --stdout >>
>>> theme/migrations/0016_blog_customization.py
>>>
>>>
>>> And then:
>>>
>>> $ python manage.py migrate theme
>>>
>>>
>>> I quickly glanced at this caveat, but wasn't really sure what it would
>>> mean:
>>>
>>> *Be warned that over time this approach will almost certainly require
>>> some manual intervention by way of editing migrations, or modifying the
>>> database manually to create the correct state. Ultimately there is a
>>> trade-off involved here.*
>>>
>>>
>>> So I made a different change to a model, which was just adding a
>>> BooleanField. When I try the schema migration now I get:
>>>
>>> $ python manage.py schemamigration theme --auto
>>> You cannot use automatic detection, since the previous migration does
>>> not have this whole app frozen.
>>> Either make migrations using '--freeze theme' or set
>>> 'SOUTH_AUTO_FREEZE_APP = True' in your settings.py.
>>>
>>>
>>> I've tried to review the docs for the --freeze option, but I'm just not
>>> understanding what to do. Example:
>>>
>>> python manage.py schemamigration --freeze theme --empty --auto
>>> You must provide an app to create a migration for.
>>>
>>>
>>> Can someone guide me in the right direction?
>>>
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