from django.db import models

from polymorphic.models import PolymorphicModel, PolymorphicManager, PolymorphicQuerySet, ShowFields, ShowFieldsAndTypes


class Project(ShowFields, PolymorphicModel):
    topic = models.CharField(max_length=30)
class ArtProject(Project):
    artist = models.CharField(max_length=30)
class ResearchProject(Project):
    supervisor = models.CharField(max_length=30)

class ModelA(PolymorphicModel):
    field1 = models.CharField(max_length=10)
class ModelB(ModelA):
    field2 = models.CharField(max_length=10)
class ModelC(ModelB):
    field3 = models.CharField(max_length=10)