Django Documentation, Release 1.2
1.3 Enjoy the free API
With that, you’ve got a free, and rich, Python API to access your data. The API is created on the fly, no code generation
necessary:
>>> from mysite.models import Reporter, Article
# No reporters are in the system yet.
>>> Reporter.objects.all()
[]
# Create a new Reporter.
>>> r = Reporter(full_name=’John Smith’)
# Save the object into the database. You have to call save() explicitly.
>>> r.save()
# Now it has an ID.
>>> r.id
1
# Now the new reporter is in the database.
>>> Reporter.objects.all()
[<Reporter: John Smith>]
# Fields are represented as attributes on the Python object.
>>> r.full_name
’John Smith’
# Django provides a rich database lookup API.
>>> Reporter.objects.get(id=1)
<Reporter: John Smith>
>>> Reporter.objects.get(full_name__startswith=’John’)
<Reporter: John Smith>
>>> Reporter.objects.get(full_name__contains=’mith’)
<Reporter: John Smith>
>>> Reporter.objects.get(id=2)
Traceback (most recent call last):
...
DoesNotExist: Reporter matching query does not exist.
# Create an article.
>>> from datetime import datetime
>>> a = Article(pub_date=datetime.now(), headline=’Django is cool’,
... content=’Yeah.’, reporter=r)
>>> a.save()
# Now the article is in the database.
>>> Article.objects.all()
[<Article: Django is cool>]
# Article objects get API access to related Reporter objects.
>>> r = a.reporter
>>> r.full_name
’John Smith’
# And vice versa: Reporter objects get API access to Article objects.
6 Chapter 1. Django at a glance
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