Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
228 views
in Technique[技术] by (71.8m points)

How can i update django foreignkey?

I have a model OrderItem and it has a foreignkey order. I also have a function that creates an OrderItem like so,

OrderItem.objects.create(shopping_id=_shopping_id(request),
                                          quantity=quantity,
                                          item=i,
                                          created_by=anon_user,
                                          modified_by=anon_user)

As you can see i have not included order because i have failed to understand how i can be able to do it. i get the error order_items.order_id may not be NULL

here is my model OrderItem

class OrderItem(SmartModel):
    shopping_id = models.CharField(max_length=50,db_index=True)
    quantity = models.IntegerField(default=0)
    item = models.ForeignKey(Item)
    order = models.ForeignKey(Order)

Any kind of help is appreciated.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Why is adding order any different from adding item? They're both ForeignKeys, and in both cases you simply pass the relevant object as the keyword argument.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...