Django South - table already exists

Question

I am trying to get started with South. I had an existing database and I added South (syncdb, schemamigration --initial).

Then, I updated <

Answer 1

Although the table "myapp_tablename" already exists error stop raising after I did ./manage.py migrate myapp --fake, the DatabaseError shows no such column: myapp_mymodel.added_field.

Got exactly the same problem!

1.Firstly check the migration number which is causing this. Lets assume it is: 0010.

2.You need to:

./manage.py schemamigration myapp --add-field MyModel.added_field
./manage.py migrate myapp

if there is more than one field missing you have to repeat it for each field.

3.Now you land with a bunch of new migrations so remove their files from myapp/migrations (0011 and further if you needed to add multiple fields).

4.Run this:

./manage.py migrate myapp 0010

Now try ./manage.py migrate myapp

If it doesn't fail you're ready. Just doublecheck if any field's aren't missing.

EDIT:

This problem can also occur when you have a production database for which you install South and the first, initial migration created in other enviorment duplicates what you already have in your db. The solution is much easier here:

1. Fake the first migration:

   ./manage migrate myapp 0001 --fake

2. Roll with the rest of migrations:

   ./manage migrate myapp

Answer 2

Perform these steps in order may help you:

1) python manage.py schemamigration apps.appname --initial

Above step creates migration folder as default.

2) python manage.py migrate apps.appname --fake

generates a fake migration.

3) python manage.py schemamigration apps.appname --auto

Then you can add fields as you wish and perform the above command.

4) python manage.py migrate apps.appname