old_contents: from django.db import models
  
  
  class Set(models.Model):
      name = models.TextField(default='')
  
      def __str__(self):
          return self.name
  
  
  class Phrase(models.Model):
      url = models.TextField(default='')
      english = models.TextField(default='')
      korean = models.TextField(default='')
      set = models.ForeignKey(Set)
      difficulty = models.PositiveSmallIntegerField(default=32767)
  
  
  class PlayerRecord(models.Model):
      phrase = models.ForeignKey(Phrase)
      answer = models.TextField(default='')
  
new_contents: from django.db import models
  
  
  class Set(models.Model):
      name = models.TextField(default='')
  
      def __str__(self):
          return self.name
  
  
  class Phrase(models.Model):
      title = models.TextField(default='')
      url = models.TextField(default='')
      english = models.TextField(default='')
      korean = models.TextField(default='')
      set = models.ForeignKey(Set)
      difficulty = models.PositiveSmallIntegerField(default=32767)
  
  
  class PlayerRecord(models.Model):
      phrase = models.ForeignKey(Phrase)
      answer = models.TextField(default='')
  
subject: add title field on Phrase