Fields Clash In Case Of Inheritance

I' ve the following simplified model structure: #common/models.py class CLDate(models.Model): active = models.BooleanField(default=True) last_modified = models.DateTimeFiel

Solution 1:

Since you are using multi-table inheritance, Django creates an implicit one-to-one field from Dokument to CLDate. The reverse relation dokument from CLDate to Dokument is clashing with your Entity.dokument field.

If you don't want to rename your Entity.dokument field, then your other option is to explicitly define the parent link field from Dokument to CLDate and set related_name.

class Dokument(CLDate):
    cl_date = models.OneToOneField(CLDate, parent_link=True, related_name='related_dokument')
    user = models.ForeignKey(User)