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
157 views
in Technique[技术] by (71.8m points)

Difference between Django's filter() and get() methods

What is the difference between

mymodel=model.objects.get(name='pol')

and

mymodel=model.objects.filter(name='pol')
question from:https://stackoverflow.com/questions/3221938/difference-between-djangos-filter-and-get-methods

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)

The Django QuerySet docs are very clear on this:

get(**kwargs)?

Returns the object matching the given lookup parameters, which should be in the format described in Field lookups.

get() raises MultipleObjectsReturned if more than one object was found. The MultipleObjectsReturned exception is an attribute of the model class.

get() raises a DoesNotExist exception if an object wasn't found for the given parameters. This exception is also an attribute of the model class.

filter(**kwargs)

Returns a new QuerySet containing objects that match the given lookup parameters.

Basically use get() when you want to get a single unique object, and filter() when you want to get all objects that match your lookup parameters.


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

...