python - django convert datetimefield to datefield with mysql backend -


for django app, want convert datetimefield datefield. resulting in error :

 date truncation column ...

can please tell me how ?

i have tried this:

i have written datamigration before schemamigration modifies values of datetimefield datetime date . 

  obj.datetimefield = obj.datetimefield.date()   obj.save()   --- error here.

how expect work without schemamigration?

you add field model, then run code copy old field new field after modification(s). then can delete old field , finally rename new field.

but honestly, should have @ south, excellent , common used tool migrating django models.


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