So I know there are already a ton of questions by people who changed a model and then failed to apply the migration to their database. However, in my case, I know for a fact that the migration was applied, as I can see the new table data.
Basically, I installed django-cms, and then I added a field to the djangocms_column plugin's models.py to allow me to add a Bootstrap class name to my columns (e.g. col-md-4, col-md-6, etc.).
if hasattr(settings, "COLUMN_CLASS_CHOICES"):
CLASS_CHOICES = settings.COLUMN_CLASS_CHOICES
else:
CLASS_CHOICES = (
('col-md-1', _("col-md-1")),
('col-md-2', _("col-md-2")),
('col-md-3', _('col-md-3')),
('col-md-4', _("col-md-4")),
('col-md-5', _('col-md-5')),
('col-md-6', _("col-md-6")),
('col-md-7', _('col-md-7')),
('col-md-8', _('col-md-8')),
('col-md-9', _('col-md-9')),
('col-md-10', _('col-md-10')),
('col-md-11', _('col-md-11')),
('col-md-12', _('col-md-12')),
('', _('none')),
)
...
@python_2_unicode_compatible
class Column(CMSPlugin):
"""
A Column for the MultiColumns Plugin
"""
width = models.CharField(_("width"), choices=WIDTH_CHOICES, default=WIDTH_CHOICES[0][0], max_length=50)
"""
This is the new field:
"""
bs_class = models.CharField(_("bs_class"), choices=CLASS_CHOICES, default=CLASS_CHOICES[0][0], max_length=50)
def __str__(self):
return u"%s" % self.get_width_display()
I then ran ./manage.py makemigrations and then ./manage.py migrate, and now the table looks like this:
sqlite> select * from djangocms_column_column;
cmsplugin_ptr_id bs_class width
---------------- ---------- ----------
3 col-md-1 33%
5 col-md-1 33%
7 col-md-1 33%
19 col-md-1 33%
21 col-md-1 33%
23 col-md-1 33%
Yet when I try to access the test server, I still get the following error:
OperationalError at /en/
no such column: djangocms_column_column.bs_class
Request Method: GET
Request URL: http://localhost:8000/en/
Django Version: 1.7.10
Exception Type: OperationalError
Exception Value:
no such column: djangocms_column_column.bs_class
And, yes, I've tried deleting the database and running ./manage.py migrate, but the site still displays the same error. Is there a special migration procedure one must use to modify plugins installed in the ./env/lib/python2.7/site-packages folder?