Question

我有一个名为Product_Variation的模型：

class Product_Variation( models.Model ):
    color               = models.ForeignKey('Color', verbose_name="Color", on_delete=models.CASCADE, null=True, blank=True)
    size                = models.ForeignKey('Size', verbose_name="Size", on_delete=models.CASCADE, null=True, blank=True)
    sku                 = models.CharField(verbose_name="SKU", max_length=255, null=True, blank=True)
    main_picture        = FilerImageField(related_name="main_picture", verbose_name="Main Picture", null=True, blank=True)
    image_gallery       = models.ManyToManyField('Media', related_name="image_gallery", verbose_name="Image Gallery", blank=True)
    regular_price       = models.FloatField(verbose_name="Regular Price", null=True, blank=True)
    sale_price          = models.FloatField(verbose_name="Sale Price", null=True, blank=True)
    stock_quantity      = models.PositiveIntegerField(verbose_name="Stock Quantity", default=0, null=True, blank=True)
    weight              = models.FloatField(verbose_name="Weight", default=0, null=True, blank=True)
    dimension_length    = models.FloatField(verbose_name="Length", default=0, null=True, blank=True)
    dimension_width     = models.FloatField(verbose_name="Width", default=0, null=True, blank=True)
    dimension_height    = models.FloatField(verbose_name="Height", default=0, null=True, blank=True)
    barcode             = models.CharField(verbose_name="Barcode", max_length=255, null=True, blank=True)
    priority            = models.PositiveIntegerField(verbose_name="Priority", null=True, blank=True)
    total_view          = models.PositiveIntegerField(verbose_name="Total View", default=0, null=True, blank=True)
    total_sales         = models.PositiveIntegerField(verbose_name="Total Sales", default=0, null=True, blank=True)

    created = models.DateTimeField(default=now)

    product = models.ForeignKey('Product', verbose_name="Product that Variation belongs to", on_delete=models.CASCADE, null=True, blank=True)

如何获得具有不同颜色的Product_variations？我正在使用mysql。

我试过了：

Product_Variation.objects.all().values('product__id', 'color').distinct()

但我不知道如何只获取id，因为如果我使用

Product_Variation.objects.all().values('id', 'product__id', 'color').distinct()

distinct不再起作用，因为id都是唯一的

Answer 1

试试这个：

distinct_prod_vals = Product_Variation.objects.values('color').distinct()

Django只选择具有不同字段的模型

1 个答案: