Django 1.7 data migrations?

[Kent Engström]

I just had a look at the Django 1.7 migrations docs at
https://docs.djangoproject.com/en/dev/topics/migrations/

In South, I've learned to use schema migrations and data migrations
together, for situations like when you need to combine two fields, or
split them (schema migration to add new fields, data migration to copy
data, schema migration to remove old fields).

Is the new built-in system supposed to handle data migrations too? Is so,
how? I did not find a documented place to put arbitrary Python code in
the new declarative format.

If not: how is that need handled in the future? Migrate to point X, run
a script, continue to migrate?

Should this be mentioned somewhere in the docs?


Sorry if I'm confused about this,
/ Kent Engström, Lysator

[Andrew Godwin]

Hi Kent,

The documentation is not yet complete, hence your confusion. There is indeed provision for data migrations in the new system, with an operation called RunPython - I'll see if I can get documentation up for it this week.

Andrew

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[Kent Engström]

Andrew Godwin <and...@aeracode.org> writes:
> Hi Kent,
>
> The documentation is not yet complete, hence your confusion. There is
> indeed provision for data migrations in the new system, with an
> operation called RunPython - I'll see if I can get documentation up
> for it this week.

OK, splendid! :-) I guess I was fooled by the polished look of that incomplete
page.

Thanks for all your work on South --- you've saved me a lot of time and
tears over the years!

/ Kent Engström, Lysator

[Andrew Godwin]

To follow up on this, I've just pushed some documentation for this up - you can see it at https://docs.djangoproject.com/en/dev/topics/migrations/#data-migrations

Feedback welcome!

Andrew

/ Kent Engström, Lysator

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