Filter inline field in Django Admin ⇐ Python

[Anonymous]

У меня есть следующие модели: < /p>

Код: Выделить всё

class Provider(models.Model):
name = models.CharField()
...

class Article(models.Model):
provider = models.ManyToManyField(Provider)
...

class Invoice(models.Model):
provider = models.ForeignKey(Provider)
...

class ArticleInvoice(models.Model):
article = models.ForeignKey(Article)
invoice = models.ForeignKey(Invoice)
... #qty, status, etc
< /code>
И мой администратор выглядит как: < /p>
class ArticleInvoiceInline(admin.TabularInline):
model = ArticleInvoice

class InvoiceAdmin(models.Model):
inlines = [ArticleInvoiceInline]

admin.site.register(Invoice, InvoiceAdmin)

The problem:
When I create an Invoice I have to chose a Provider, then add some ArticleInvoices, the ArticleInvoice have an Article which has a Provider, when I choose the статья для articleInvoice показывает все статьи.>

Подробнее здесь: https://stackoverflow.com/questions/358 ... ango-admin