Thanks for documenting your trouble, I ran into the same problem today. The 
kludge solution that I came up with was: 'yes yes | python manage.py 
migrate' in my deployment script -- decidedly suboptimal.

My preference would be for the yes/no decision of dropping stale models to 
be recorded within the migration itself at creation time, analogous to the 
choice of a backfill value a new column without a default value on existing 
rows. 

On Wednesday, May 20, 2015 at 10:22:45 PM UTC-4, Proto wrote:
>
> I submitted this ticket recently: 
> https://code.djangoproject.com/ticket/24820 
>
> The content of it is as follows:
>
> While removing models in one of my migrations, I was prompted by Django to 
>> input yes/no. For development, this is no problem. For automatic 
>> deployments it is.
>>
>> I want to know if there exists or if it's possible to add functionality 
>> to Django to do this. I've created a modification which works, but also 
>> want to learn if anyone else has solved this problem differently.
>>
>> Modifying the deployment file to include --noinput does not solve this 
>> problem (it basically defaults to no which ultimately doesn't remove the 
>> model).
>>
>> The patch I've created seems to be working just fine. My solution 
>> involves editing the contenttypes to take an additional argument. The 
>> argument can be invoked inside a migration file so that I have full control 
>> over when it's used. You can view the code below.
>>
>> Link to diff for the patch I created: 
>> ​https://github.com/Protosac/django/commit/d98fff8219469a363493e8d8455c7ffb2430d36f
>
>
> The Django core team expressed interest in a solution that would address 
> this problem, but rejected my specific implementation. I wanted to open a 
> discussion to learn how other developers were dealing with this issue. 
>

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