South data-migration and custom save() method

[Val Neekman]

South (latest) has a limitation where it ignores a custom save() method in the model class.

I am wondering if that is going to be true for the new South in the core in Django 1.7?

Thanks,

Val

[Andrew Godwin]

This will also be true for django.db.migrations; there's no way we can serialise save methods as part of the model for later use in migrations. If you want to use complex save logic in migrations, you'll have to copy it into the migration file (which also means the migration will keep working as originally written if you later change what the save method does).

Andrew

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[Val Neekman]

Yep, this is what I currently do and I was just hoping for a cleaner solution in 1.7. That's all.

Thanks for django.db.migrations Andrew.

Val

 

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[Christian Schmitt]

I didn't found anything in the docs... So... could I stil load a fixture with a migration? Like here: http://south.readthedocs.org/en/latest/fixtures.html

[Andrew Godwin]

It won't load initial_data fixtures - those are being deprecated for migrated apps - but you could still call loaddata with a custom one, I guess. I'd personally recommend moving away from fixtures and just instantiating objects directly using the ORM inside data migrations.

Andrew

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[Christian Schmitt]

That's what i do in south, sometimes.

But sometimes you have a bigger table with initial data, like a table with predefined prices. and it wouldn't be that cool to instantiate 20.000 or more prices manually.