old_contents: from django.db import models
  from django.contrib.auth.models import User
  import uuid
  
  from django.db.models.signals import post_save
  from django.dispatch import receiver
  
  # Create your models here.
  
  
  class ActiveUsersManager(models.Manager):
      """Active user manager."""
      def get_querysets(self):
          """Get the query set of active users."""
          return super(ActiveUsersManager, self).get_querysets().filter(user__is_active__=True)
  
  
  class ImagerProfile(models.Model):
      """The ImagerProfile and all of its attributes."""
  
      user = models.OneToOneField(
          User,
          related_name="profile",
          on_delete=models.CASCADE
      )
      objects = models.Manager()
      active = ActiveUsersManager()
      hireable = models.BooleanField(default=True)
      address = models.CharField(max_length=255, blank=True, null=True)
      camera_type = models.CharField(max_length=255, blank=True, null=True)
      personal_website = models.URLField(max_length=200)
      bio = models.TextField()
      travel_radius = models.DecimalField(max_digits=8, decimal_places=3, null=True)
      phone = models.CharField(max_length=50, blank=True, null=True)
      photo_type = models.CharField(max_length=50, blank=True, null=True)
  
      def display_properties(self):
          """Print the properties of this profile."""
          print(self.hireable)
          print(self.address)
          print(self.camera_type)
          print(self.personal_website)
          print(self.bio)
          print(self.travel_radius)
          print(self.phone)
          print(self.photo_type)
  
      @property
      def is_active(self):
          """Return True if user is active."""
          return self.user.is_active
  
  
  @receiver(post_save, sender=User)
  def make_profile_for_user(sender, instance, **kwargs):
      new_profile = ImagerProfile(user=instance)
      if kwargs['created']:
          profile = ImagerProfile(user=instance)
          profile.save()
  
new_contents: from django.db import models
  from django.contrib.auth.models import User
  import uuid
  
  from django.db.models.signals import post_save
  from django.dispatch import receiver
  
  # Create your models here.
  
  
  class ActiveUsersManager(models.Manager):
      """Active user manager."""
      def get_querysets(self):
          """Get the query set of active users."""
          return super(ActiveUsersManager, self).get_querysets().filter(user__is_active__=True)
  
  
  class ImagerProfile(models.Model):
      """The ImagerProfile and all of its attributes."""
  
      user = models.OneToOneField(
          User,
          related_name="profile",
          on_delete=models.CASCADE
      )
      objects = models.Manager()
      active = ActiveUsersManager()
      hireable = models.BooleanField(default=True)
      address = models.CharField(max_length=255, blank=True, null=True)
      camera_type = models.CharField(max_length=255, blank=True, null=True)
      personal_website = models.URLField(max_length=200)
      bio = models.TextField()
      travel_radius = models.DecimalField(max_digits=8, decimal_places=3, null=True)
      phone = models.CharField(max_length=50, blank=True, null=True)
      photo_type = models.CharField(max_length=50, blank=True, null=True)
  
      def display_properties(self):
          """Print the properties of this profile."""
          print(self.hireable)
          print(self.address)
          print(self.camera_type)
          print(self.personal_website)
          print(self.bio)
          print(self.travel_radius)
          print(self.phone)
          print(self.photo_type)
  
      @property
      def is_active(self):
          """Return True if user is active."""
          return self.user.is_active
  
  
  @receiver(post_save, sender=User)
  def make_profile_for_user(sender, instance, **kwargs):
      """Output info about new user."""
      new_profile = ImagerProfile(user=instance)
      if kwargs['created']:
          profile = ImagerProfile(user=instance)
          profile.save()
  
subject: test change