django multiple choice model problems

Question

I have two diferents problems with multple choices in models.

The first, i'm trying to do a multiple choice so the user can pick one or more days of the week:

DAYS_CHOICES = (
    (1, _('Monday')),
    ...
    (7, _('Sunday')),
)
...
day = models.ManyToManyField('day', choices=DAYS_CHOICES)

The second problem:

I want to make a ManyToMany Relation with a model define in other model: First (Import to the model):

from events.models import Category

Second (The field related to the model):

type = models.ManyToManyField('Category', null=True, blank=True)

I get this error on syncdb:

Error: One or more models did not validate: situ.situ: 'day' has an m2m relation with model day, which has either not been installed or is abstract.
situ.situ: 'type' has an m2m relation with model Category, which has either not been installed or is abstract.

Answer 1

you could use :

day = forms.ModelMultipleChoiceField(queryset=Day.objects.all())