Question

I have a new field in the Client called note which has a one-to-one relation with Notes.
I want to be able to add the note column under the Client table in mysql. It does not work when I use python manage.py syncdb. So I would like to know how to add a one-to-one field in mysql to an existing table.

models.py

class Note(models.Model):
    datetime = models.DateTimeField(default=datetime.now)
    user  = models.ForeignKey(User)
    note = models.TextField()

    def __unicode__(self):
        return unicode(self.name)

class Client(models.Model):
    note = models.OneToOneField(Note) # new
    def __unicode__(self)
       return unicode(self.user)

Answer 1

Syncdb doesn’t change your database in order not to destroy your data. See django book.

You can update the database manually or use an automated migration tool (at your own risk) like South.

EDIT:
In django book, you can also read detailed instructions about manual changes along with SQL examples. Other useful information can be found in MySQL manual.