Applying Django migrations in a non-interactive environment
You can use the --noinput command line argument of migrate command:
./manage.py migrate --noinputThis would suppress the prompt, but will not delete stale content types (ie. it works as if you answered No at the prompt). See Django ticket #25036 .
Another alternative would be to use the Unix command yes (I am not sure if it is enabled on Heroku by default though):
yes "yes" | ./manage.py migrate