BB
Size: a a a
BB
BB
class A(models.Model):
class Meta:
abstract = True
class B(models.Model):
class Meta:
abstract = True
class C(models.Model)):
class Meta:
abstract = True
class D(A, B, C, models.Model):
class Meta:
abstract = True
class P(D, models.Model):
class Meta:
"""
Main model
"""
DT
BB
DT
BB
DT
BB
BB
A
R
R
DT
A
R
A
A
DT
BB
BB