[Answered ]-Adding Columns to Existing Schema

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2👍

✅

In django 1.7+ there is no need of south.Only

python manage.py makemigrations
python manage.py migrate

If you’re changing over from an existing app you made in django 1.7-, then you need to do one pre-step (as I found out) listed in the documentation:

python manage.py makemigrations your_app_label

Also try this

class Mymodel(models.Model):
    myfiled = models.CharField()
    # ...

    class Meta:
        managed = True
👤itzMEonTV

0👍

You can write you own sql command to add the missing column giving you that error.
first run:

python manage.py makemigrations --empty yourappname

then you can go to your app and find the newly generated migration file
having a code similar to the code below.

I’m not sure the kind of column you want add but inside operations in the below code, you put your sql command. In my example I’m just adding a character varying field.

class Migration(migrations.Migration):

    dependencies = [
        ('app_name', '0002_auto_20150619_2439'),
    ]

    operations = [
        migrations.RunSQL('ALTER TABLE mytable ADD COLUMN mycolumn character varying(50) NOT NULL')
    ]

I hope this helps.

👤Patrick Tutu

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