old_contents: from django.db import models
  
  # Create your models here.
  class Movie(models.Model):
      movie_id = models.IntegerField(primary_key=True)
      title = models.CharField(max_length=200)
      poster = models.ImageField(null=True, blank=True)
      year = models.IntegerField(null=True)
      genres = models.CharField(max_length=200)
      num_ratings = models.IntegerField(null=True)
      rating_median = models.FloatField(null=True)
      rating_mean = models.FloatField(null=True)
      relatable = models.BooleanField(default=True)
  
      def __str__(self):
          return self.title
  
  
  class LikedOrNot(models.Model):
      movie = models.ForeignKey(Movie)
      liked_or_not = models.SmallIntegerField(null=True, blank=True,
                                              choices=((-1, "bad"), (0, "alright"), (1, "liked")))
  
  
  class Similarity(models.Model):
      first_movie = models.ForeignKey(Movie, related_name='first_movie')
      second_movie = models.ForeignKey(Movie, related_name='second_movie')
      similarity_score = models.FloatField()
  
  
  class Tag(models.Model):
      movie = models.ForeignKey(Movie)
      tag = models.CharField(max_length=50)
      relevance = models.FloatField()
  
  
  class OnlineLink(models.Model):
      movie = models.ForeignKey(Movie)
      imdb_id = models.CharField(max_length=50)
  
new_contents: from django.db import models
  
  # Create your models here.
  class Movie(models.Model):
      movie_id = models.IntegerField(primary_key=True)
      title = models.CharField(max_length=200)
      poster = models.ImageField(null=True, blank=True)
      year = models.IntegerField(null=True)
      genres = models.CharField(max_length=200)
      num_ratings = models.IntegerField(null=True)
      rating_median = models.FloatField(null=True)
      rating_mean = models.FloatField(null=True)
      relatable = models.BooleanField(default=True)
      liked_or_not = models.NullBooleanField(null=True, blank=True)
  
      def __str__(self):
          return self.title
  
  
  class Similarity(models.Model):
      first_movie = models.ForeignKey(Movie, related_name='first_movie')
      second_movie = models.ForeignKey(Movie, related_name='second_movie')
      similarity_score = models.FloatField()
  
  
  class Tag(models.Model):
      movie = models.ForeignKey(Movie)
      tag = models.CharField(max_length=50)
      relevance = models.FloatField()
  
  
  class OnlineLink(models.Model):
      movie = models.ForeignKey(Movie)
      imdb_id = models.CharField(max_length=50)
  
subject: Add self-rating flag for movies. Removed LikedOrNot table