Hi Issuer,
Check your tracker_passenger.
https://docs.djangoproject.com/en/2.2/ref/models/fields/#django.db.models.ManyToManyField
On Sun, Nov 10, 2019, 21:40 Malibu <malib...@gmail.com> wrote:
> Hi there. I've been doing Django for awhile but I am stumped on this
> one.. I have a many to many relationship with a 'through' definition
>
> main.models:
>
> class Client(models.Model):
> uid = models.CharField(max_length=128, unique=True)
> key = models.CharField(max_length=128)
> img = models.TextField()
> version = models.CharField(max_length=20)
> lastConnection = models.DateTimeField()
> role = models.CharField(max_length=128,default="")
>
>
>
> tracker.models:
>
> from main.models import Client
>
> class PassengerAccess(models.Model):
> passenger = models.ForeignKey('Passenger',on_delete=models.CASCADE)
> client = models.ForeignKey(Client,on_delete=models.CASCADE)
> created = models.DateTimeField(auto_now_add=True,blank=True)
> selected = models.BooleanField(default=False)
>
> class Passenger(models.Model):
> first_name = models.CharField(max_length=50)
> last_name = models.CharField(max_length=50)
> access_code = models.CharField(max_length=32)
> school_division = models.ForeignKey(SchoolDivision)
> open_clients = models.ManyToManyField(Client, through='PassengerAccess')
>
>
> The error I get when I try to migrate is: django.db.utils.ProgrammingError:
> there is no unique constraint matching given keys for referenced table
> "tracker_passenger"
>
> Any solution to this error appears to be related to a foreign key that is
> referencing a field that is not unique, but in this case passenger and client
> should both be accessing the primary key should they not? I always use plain
> integer primary keys.
>
> Any suggestions on how to troubleshoot this would be appreciated.
>
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