創建了M2M和FK關係

Question

模型對象，我有以下模型 -

class Category(models.Model): 
    category = models.CharField(max_length=100) 

class Credit(models.Model): 
    person = models.CharField(max_length=100) 
    position = models.CharField(max_length=100) 

class Video(models.Model): 
    title = models.CharField(max_length=100) 
    category = models.ForeignKey(Category) 
    credits = models.ManyToManyField(Credit) 

我已經創建瞭如下Category和Credit對象 -

>>> Category.objects.create(category='animation') 
>>> Category.objects.create(category='drama') 
>>> Credit.objects.create(person='john', position='director') 
>>> Credit.objects.create(person='tom', position='writer') 

我再「得到」這四個對象 -

>>> cat1 = Category.objects.get(category='animation') 
>>> cat2 = Category.objects.get(category='drama') 
>>> cred1 = Credit.objects.get(person='john') 
>>> cred2 = Credit.objects.get(person='tom') 

但我在創建時遇到困難對象。我將如何創建以下兩個對象？

1) Video.objects.create(title='little italy', category=cat1, credits=cred1) ?? 
2) Video.objects.create(title='new film', category=cat2, credits=cred1, cred2) ?? 

謝謝。

Answer 1

>>> v1 = Video.objects.create(title='little italy', category=cat1) 
>>> v1 
<Video: little italy> 
>>> v1.credits.add(cred1) 

...等...