Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
333 views
in Technique[技术] by (71.8m points)

python - Django DB level default value for a column

Django is proving the model field argument default (https://docs.djangoproject.com/en/dev/ref/models/fields/#default) but as I know it will be called every time new object is created via django. If we insert/create a records with raw queries (using django.db.connection.cursor) we will get the exception cause Field 'xyz' doesn't have a default value.

How to represent the db level default value for the column in model. Like db_index.

I hope you guy understand my question.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

There is an open ticket 470 to include default values in the SQL schema.

Until this feature has been added to Django, you'll have to manually run alter table statements yourself or write a migration to run them if you want a default value in the SQL schema.

Note that Django allows callables as defaults, so even if this feature is added to Django, it won't be possible to have all defaults in the database.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...