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Diffstat (limited to 'tests/modeltests/get_or_create/models.py')
| -rw-r--r-- | tests/modeltests/get_or_create/models.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tests/modeltests/get_or_create/models.py b/tests/modeltests/get_or_create/models.py new file mode 100644 index 0000000000..10a8721afc --- /dev/null +++ b/tests/modeltests/get_or_create/models.py @@ -0,0 +1,52 @@ +""" +32. get_or_create() + +get_or_create() does what it says: it tries to look up an object with the given +parameters. If an object isn't found, it creates one with the given parameters. +""" + +from django.db import models + +class Person(models.Model): + first_name = models.CharField(maxlength=100) + last_name = models.CharField(maxlength=100) + birthday = models.DateField() + + def __str__(self): + return '%s %s' % (self.first_name, self.last_name) + +API_TESTS = """ +# Acting as a divine being, create an Person. +>>> from datetime import date +>>> p = Person(first_name='John', last_name='Lennon', birthday=date(1940, 10, 9)) +>>> p.save() + +# Only one Person is in the database at this point. +>>> Person.objects.count() +1 + +# get_or_create() a person with similar first names. +>>> p, created = Person.objects.get_or_create(first_name='John', last_name='Lennon', defaults={'birthday': date(1940, 10, 9)}) + +# get_or_create() didn't have to create an object. +>>> created +False + +# There's still only one Person in the database. +>>> Person.objects.count() +1 + +# get_or_create() a Person with a different name. +>>> p, created = Person.objects.get_or_create(first_name='George', last_name='Harrison', defaults={'birthday': date(1943, 2, 25)}) +>>> created +True +>>> Person.objects.count() +2 + +# If we execute the exact same statement, it won't create a Person. +>>> p, created = Person.objects.get_or_create(first_name='George', last_name='Harrison', defaults={'birthday': date(1943, 2, 25)}) +>>> created +False +>>> Person.objects.count() +2 +""" |
