old_contents: from django.db import models
  
  # Create your models here.
  class Album(models.Model):
      album_id = models.AutoField(primary_key=True)
      name = models.CharField(max_length=125)
      author = models.CharField(max_length=125)
      release_date = models.DateField()
      def __str__(self):
          return self.name
      def give_author(self):
          return self.author
      def give_release_date(self):
          return self.release_date
  
  class Song(models.Model):
      name = models.CharField(max_length=125)
      album_id = models.ForeignKey(album, on_delete=models.CASCADE, default=0)
      change_date = models.DateField()
      audio_file = models.FileField()
      def __str__(self):
          return self.name
      def give_album(self):
          return self.album_id
      def give_change_date(self):
          return self.change_date
      def give_path(self):
          return self.audio_file
  
new_contents: from django.db import models
  
  # Create your models here.
  class Album(models.Model):
      album_id = models.AutoField(primary_key=True)
      name = models.CharField(max_length=125)
      author = models.CharField(max_length=125)
      release_date = models.DateField()
      def __str__(self):
          return self.name
      def give_author(self):
          return self.author
      def give_release_date(self):
          return self.release_date
  
  class Song(models.Model):
      name = models.CharField(max_length=125)
      album_id = models.ForeignKey(Album, on_delete=models.CASCADE, default=0)
      change_date = models.DateField()
      audio_file = models.FileField()
      def __str__(self):
          return self.name
      def give_album(self):
          return self.album_id
      def give_change_date(self):
          return self.change_date
      def give_path(self):
          return self.audio_file
  
subject: fix model