old_contents: from codesharer.utils.models import Model, String
  
  class Organization(Model):
      slug = String()
      name = String()
  
      def get_all_members(self):
          return OrganizationMember.objects.for_index('org', self.pk)
  
  class OrganizationMember(Model):
      org = String()
      user = String()
      
      class Meta:
          indexes = ('org',)
new_contents: import time
  
  from codesharer.utils.models import Model, String, Float
  
  class Organization(Model):
      slug = String()
      name = String()
      created_at = Float(default=time.time)
  
      def get_all_members(self):
          return OrganizationMember.objects.for_index('org', self.pk)
  
  class OrganizationMember(Model):
      org = String()
      user = String()
      created_at = Float(default=time.time)
      
      class Meta:
          indexes = ('org',)
subject: Add created_at