[Answered ]-Django models.ForeignKey issue with model with custom foreign key

It sounds like you have to specify db_column, to let Django know the name of the column in the PatientMed column.

class PatientMed(models.Model):
    circdetect = models.ForeignKey(CircDetect, on_delete=models.CASCADE, db_column='circdetect', to_field='oid')

You haven’t written the instruction that makes the error. But it seems that you have another table named PatientInfo that the error is related to.

I’m not sure what was the cause of the problem. I solved it by dropping my database and recreating it and my entities.
Thank you everyone.