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143 lines
3.7 KiB
143 lines
3.7 KiB
from django.db import models
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from django.db.models import Avg
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class Genre(models.Model):
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name = models.CharField(max_length=100,verbose_name="类型")
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class Meta:
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db_table='Genre'
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verbose_name='电影类型'
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verbose_name_plural='电影类型'
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def __str__(self):
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return self.name
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class Movie(models.Model):
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name=models.CharField(max_length=256,verbose_name="电影名")
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imdb_id = models.IntegerField(verbose_name="imdb_id")
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time=models.CharField(max_length=256,blank=True,verbose_name="时长")
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genre =models.ManyToManyField(Genre,verbose_name="类型")
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release_time=models.CharField(max_length=256,blank=True,verbose_name="发行时间")
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intro=models.TextField(blank=True,verbose_name="简介")
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director=models.CharField(max_length=256,blank=True,verbose_name="导演")
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actor=models.CharField(max_length=256,blank=True,verbose_name="演员")
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writers=models.CharField(max_length=256,blank=True,verbose_name="编剧")
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movie_similarity=models.ManyToManyField('self',through="Movie_similarity",symmetrical=False,verbose_name="相似电影")
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class Meta:
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db_table='Movie'
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verbose_name='电影信息'
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verbose_name_plural='电影信息'
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def __str__(self):
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return f"<Movie:{self.name},{self.imdb_id}>"
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def get_score(self):
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result_dct=self.movie_rating_set.aaggregate(Avg('score'))
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try:
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result=round(result_dct['score__avg'],1)
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except TypeError:
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return 0
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else:
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return result
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def get_user_score(self,user):
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return self.movie_rating_set.filter(user=user).values('score')
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def get_score_int_range(self):
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return range(int(self.get_score()))
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def get_genre(self):
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genre_dct=self.genre.all().values('name')
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genre_lst=[]
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for dct in genre_dct.values():
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genre_lst.append(dct['name'])
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return genre_lst
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def get_similarity(self,k=5):
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similarity_movies=self.movie_similarity.all()[:k]
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return similarity_movies
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class Movie_similarity(models.Model):
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movie_source=models.ForeignKey(Movie,related_name='movie_source',on_delete=models.CASCADE)
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movie_target=models.ForeignKey(Movie,related_name='movie_target',on_delete=models.CASCADE)
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similarity=models.FloatField(verbose_name="相似度")
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class Meta:
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verbose_name='电影相似度'
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verbose_name_plural='电影相似度'
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class User(models.Model):
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name=models.CharField(max_length=128,unique=True,verbose_name="用户名")
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password=models.CharField(max_length=256,verbose_name="密码")
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email=models.EmailField(unique=True,verbose_name="邮箱")
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rating_movies=models.ManyToManyField(Movie,through="Movie_rating")
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def __str__(self):
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return self.name
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class Meta:
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db_table='Usser'
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verbose_name='用户信息'
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verbose_name_plural='用户信息'
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class Movie_rating(models.Model):
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user = models.ForeignKey(User, on_delete=models.CASCADE, unique=False, verbose_name="用户")
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movie=models.ForeignKey(Movie,on_delete=models.CASCADE,unique=False,verbose_name="电影")
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score=models.FloatField(verbose_name="评分")
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comment=models.TextField(blank=True,verbose_name="评论")
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class Meta:
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db_table='Movie_rating'
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verbose_name='电影评分信息'
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verbose_name_plural='电影评分信息'
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class Movie_hot(models.Model):
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movie = models.ForeignKey(Movie, on_delete=models.CASCADE, verbose_name="电影名")
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rating_number = models.IntegerField(verbose_name="评分人数")
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class Meta:
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db_table='Movie_hot'
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verbose_name='最热电影'
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verbose_name_plural='最热电影'
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