ManyToManyFields作为Django管理界面中的IntegerFields

Assuming I have :

假设我有:

class Product(models.Model):
    [...]

class Basket(models.Model):
    content = models.ManyToManyField(Product, through="ProductQuantity")

class ProductQuantity(models.Model):
    basket = models.ForeignKey(Basket)
    product = models.ForeignKey(Product)
    quantity = models.IntegerField(default=0)

How could I render a ModelForm for the Basket Model with a field for each ProductQuantity of a Basket, just to be able to modify its quantity attribute?

我如何为篮子模型渲染一个ModelForm,其中包含一个篮子的每个ProductQuantity的字段,只是为了能够修改其数量属性?

Is there a widget I could use for this?

我可以用这个小部件吗?

If I was able to do such thing with such a ModelForm, could I use this ModelForm in an admin.ModelAdmin as an alternative form attribute to have the same behaviour in the admin interface?

如果我能用这样的ModelForm做这样的事情,我可以在admin.ModelAdmin中使用这个ModelForm作为替代表单属性在管理界面中具有相同的行为吗?

Edit :

@MuhammadTahir marked this post as possible duplicate of this post.

@MuhammadTahir将这篇文章标记为可能重复此帖子。

It indeed helped me to understand better, but I'm still stuck : I can't render the fields I want to render.

它确实帮助我更好地理解,但我仍然陷入困境:我无法渲染我想渲染的字段。

Here is my code so far :

这是我到目前为止的代码:

models.py

Same as above.

与上面相同。

forms.py

ProductQuantityFormSet = inlineformset_factory(Product,
                                               basket.content.through,
                                               fields=("quantity",))

admin.py

class ProductQuantityInline(admin.StackedInline):
    model = ProductQuantity
    formset = ProductQuantityFormSet()

class BasketAdmin(admin.ModelAdmin):
    inline = [ProductQuantityInline,]

1 个解决方案

#1

Someone on IRC found the problem :

IRC上有人发现了这个问题:

inline ≠ inlines in the admin.ModelAdmin. And I don't even need the inlineformset_factory().

inline≠admin.ModelAdmin中的内联。我甚至不需要inlineformset_factory()。

So here is the final code :

所以这是最终的代码:

models.py

class Product(models.Model):
    [...]

class Basket(models.Model):
    content = models.ManyToManyField(Product, through="ProductQuantity")

class ProductQuantity(models.Model):
    basket = models.ForeignKey(Basket)
    product = models.ForeignKey(Product)
    quantity = models.IntegerField(default=0)

admin.py

class ProductQuantityInline(admin.StackedInline):
    model = ProductQuantity
    fields = ["quantity",]

class BasketAdmin(admin.ModelAdmin):
    inlines = [ProductQuantityInline,]

I hope this could help somebody else. :)

我希望这可以帮助别人。 :)