Question

我有一个幻灯片模型，我需要在其中添加图片和标题n次，其中n是每个幻灯片上的幻灯片数量。这取决于幻灯片。

以下是模型：

class SlideShow(models.Model):
    name = models.CharField(blank=False, max_length=50)
    slug = models.SlugField(blank=False, max_length=50)
    type = models.CharField(choices=SLIDESHOW_TYPES, default=SLIDESHOW_TYPE_DEFAULT, max_length=20)

    height = models.IntegerField(blank=False)
    width = models.IntegerField(blank=False)

    auto_play = models.BooleanField(default=True)
    loop_play = models.BooleanField(default=True)
    random = models.BooleanField(default=True)
    display_time = models.DecimalField(blank=False, decimal_places=3, max_digits=5)    
    transition_speed = models.DecimalField(blank=False, decimal_places=3, max_digits=5)

    music_file = models.FileField(blank=True,upload_to=gen_slideshowimage_upload_dir_func('music'))
    music_loop = models.BooleanField(default=True)

    slide_count = models.IntegerField()

    # repeat the below fields as per the slide_count
    image = models.FileField(blank=False,upload_to=gen_slideshowimage_upload_dir_func('images'))
    caption = models.CharField(blank=True, max_length=25)



    def __unicode__(self):
        return self.name

每个幻灯片计数必须重复最后两个字段。

我不想在单独的模型上使用图片并与表格管理员或关系进行关联。如何使用Django实现这一目标？

Answer 1

使用主/从表是处理此问题的正确方法。（它叫Many to One Relation）：

class SlideShow(models.Model):
    name = models.CharField(blank=False, max_length=50)
    slug = models.SlugField(blank=False, max_length=50)
    type = models.CharField(choices=SLIDESHOW_TYPES, default=SLIDESHOW_TYPE_DEFAULT, max_length=20)

    height = models.IntegerField(blank=False)
    width = models.IntegerField(blank=False)

    auto_play = models.BooleanField(default=True)
    loop_play = models.BooleanField(default=True)
    random = models.BooleanField(default=True)
    display_time = models.DecimalField(blank=False, decimal_places=3, max_digits=5)    
    transition_speed = models.DecimalField(blank=False, decimal_places=3, max_digits=5)

    music_file = models.FileField(blank=True,upload_to=gen_slideshowimage_upload_dir_func('music'))
    music_loop = models.BooleanField(default=True)

    def slide_count(self):
        return len(self.images_set.all())

    def __unicode__(self):
        return self.name

class Images(modes.Model):
    image = models.FileField(blank=False,upload_to=gen_slideshowimage_upload_dir_func('images'))
    caption = models.CharField(blank=True, max_length=25)
    slideshow = models.ForeignKey(SlideShow, on_delete=models.CASCADE)

如何在Django管理员中根据需要重复某些字段？

1 个答案: