Question

我正在尝试计算＆＃34; Pelicula＆＃34;的平均得分。 Puntuacion表由pelis（Pelicula的外键）＆＃34; ，＆＃34;用户（Pelicula的外键）＆＃34;和勇气（这是得分）这是models.py

class Usuario(models.Model):
    Nombre = models.CharField(max_length=50)
    apellidos = models.CharField(max_length=50)
    usuario = models.CharField(max_length=50)
    password = models.CharField(max_length=50)
    email = models.EmailField()
    fechaNacimiento = models.DateField()
    categorias = models.CharField(max_length=50)
    def __unicode__(self):
        return self.usuario

class Pelicula(models.Model):
    titulo = models.CharField(max_length=50)
    anyo = models.CharField(max_length=50)
    actores = models.ManyToManyField('Actor')
    resumen = models.CharField(max_length=300)
    categoria = models.CharField(max_length=50)
    puntuacionMed = models.CharField(max_length=50)
    director = models.ForeignKey('Director');
    def __unicode__(self):
        return self.titulo

class Actor(models.Model):
    Nombre = models.CharField(max_length=50)
    apellidos = models.CharField(max_length=50)
    biografia = models.CharField(max_length=300)
    def __unicode__(self):
        return self.Nombre

class Director(models.Model):
    Nombre = models.CharField(max_length=50)
    apellidos = models.CharField(max_length=50)
    biografia = models.CharField(max_length=300)
    def __unicode__(self):
        return self.Nombre

class Puntuacion (models.Model):
    user = models.ForeignKey('Usuario')
    pelis = models.ForeignKey('Pelicula')
    valor = models.IntegerField()

Answer 1

以下内容应该给你答案：

from django.db import Avg

Punctuation.objects.values('pelis_id').annotate(average=Avg('valor'))

按平均顺序排列 - Django

1 个答案: