from django.db import models # Create your models here. class NomenclatureBaseModel(models.Model): name = models.CharField(max_length=100, unique=True) short_name = models.CharField(max_length=5, null=True, blank=True) description = models.TextField(blank=True, null=True) active = models.BooleanField(default=True) class Meta: abstract = True ordering = ['name'] def __str__(self): return self.name class CompanyModel(NomenclatureBaseModel): ... class LinesModel(NomenclatureBaseModel): company = models.ForeignKey( 'common.CompanyModel', on_delete=models.CASCADE, related_name='line_company' ) class OperationModel(NomenclatureBaseModel): ... class ContainerKindModel(NomenclatureBaseModel): ... class ContainerTypeModel(models.Model): name = models.CharField(max_length=6, unique=True) length = models.IntegerField() height = models.BooleanField() container_type = models.ForeignKey( 'common.ContainerKindModel', on_delete=models.CASCADE, related_name='container_type_container_kinds' ) deleted = models.BooleanField(default=False) def __str__(self): return self.name