python - 插入后如何在django admn中获取记录ID？

Question

我想在 django admin 中插入后创建一个像记录 ID 这样的目录，我该如何以及在哪里可以做到这一点。

我在 save_model 中尝试，但它不起作用，Gallery.ID 返回无

模型：

class Gallery(models.Model):
    title = models.CharField(max_length=250)
    added = models.DateTimeField()
    active = models.BooleanField()

    def __unicode__(self):
        return self.title

和 AdminModel

class GalleryAdmin(admin.ModelAdmin):
    save_on_top = True
    list_filter = ('active',)
    list_display = ('title','active','added')
    ordering = ['-added']
    inlines = [ImagesInline]

    def save_model(self, request, Gallery, form, change):
        if not change:
            Gallery.title = str(Gallery.id)
        Gallery.save()

Answer 1

将您更改GalleryAdmin为此...您需要save()在Gallery实例获取其id.

def save_model(self, request, Gallery, form, change):
    Gallery.save()
    if not change:
        Gallery.title = str(Gallery.id)

Answer 2

def save_model(self, request, Gallery, form, change):
    if Gallery.id is None:
        Gallery.save()
    if not change:
        Gallery.title = str(Gallery.id)
    Gallery.save()

save()这只是第一次做两个。