old_contents: from django.db import models
  from django_extensions.db.fields import CreationDateTimeField, ModificationDateTimeField
  from tenant_schemas.models import TenantMixin
  
  
  class Client(TenantMixin):
      name = models.CharField(max_length=100)
      client_name = models.CharField(max_length=100, unique=True)
      created = CreationDateTimeField()
      updated = ModificationDateTimeField()
  
      auto_create_schema = True
  
  
new_contents: from django.db import models
  from django_extensions.db.fields import CreationDateTimeField, ModificationDateTimeField
  from tenant_schemas.models import TenantMixin
  
  
  class Client(TenantMixin):
      name = models.CharField(max_length=100)
      client_name = models.CharField(max_length=100, unique=True)
      created = CreationDateTimeField()
      updated = ModificationDateTimeField()
  
      auto_create_schema = True
  
      def __unicode__(self):
          return self.name
subject: add unicode to client model, usefull in default behaviour of dropdowns