Question:

How to migrate `DateTimeField` to `DateField` in Django?

To migrate a ‘DateTimeField’ to a ‘DateField’ in Django, you have to follow the elbow mentioned general steps:

First add a field assignedtip_date that contains NULL for a start;
Then run a data migration that populates the field with the truncated part of the assignedtip;
Then remove the assginedtip field; and
Finally rename the assginedtip_date field to assignedtip.

The migration thus will look like:

# app_name/migrations/0123_some_name.py

from django.db import migrations, models

from django.db.models.functions import TruncDate

def migrate_date(apps, schema_editor):

MyModel = apps.get_model("app_name", "MyModel")

MyModel.objects.update(assignedtip_date=TruncDate('assignedtip'))

class Migration(migrations.Migration):

dependencies = [("migrations", "0001_initial")]

operations = [

migrations.AddField(

"MyModel", "assignedtip_date", models.DateField(null=True)

),

migrations.RunPython(migrate_date),

migrations.RemoveField("MyModel", "assignedtip"),

migrations.RenameField("MyModel", "assignedtip_date", "assignedtip"),

]

Answered by:> Willem Van Onsem

Credit:> Stackoverflow

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Django

Ritu Singh

Ritu Singh

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