2006-05-02 09:31:56 +08:00
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"""
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10. One-to-one relationships
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To define a one-to-one relationship, use ``OneToOneField()``.
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In this example, a ``Place`` optionally can be a ``Restaurant``.
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"""
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2011-07-13 17:35:51 +08:00
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from django.db import models
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2006-05-02 09:31:56 +08:00
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class Place(models.Model):
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2007-08-05 13:14:46 +08:00
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name = models.CharField(max_length=50)
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address = models.CharField(max_length=80)
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2006-05-02 09:31:56 +08:00
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Merged Unicode branch into trunk (r4952:5608). This should be fully
backwards compatible for all practical purposes.
Fixed #2391, #2489, #2996, #3322, #3344, #3370, #3406, #3432, #3454, #3492, #3582, #3690, #3878, #3891, #3937, #4039, #4141, #4227, #4286, #4291, #4300, #4452, #4702
git-svn-id: http://code.djangoproject.com/svn/django/trunk@5609 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2007-07-04 20:11:04 +08:00
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def __unicode__(self):
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return u"%s the place" % self.name
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2006-05-02 09:31:56 +08:00
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class Restaurant(models.Model):
|
Merged the queryset-refactor branch into trunk.
This is a big internal change, but mostly backwards compatible with existing
code. Also adds a couple of new features.
Fixed #245, #1050, #1656, #1801, #2076, #2091, #2150, #2253, #2306, #2400, #2430, #2482, #2496, #2676, #2737, #2874, #2902, #2939, #3037, #3141, #3288, #3440, #3592, #3739, #4088, #4260, #4289, #4306, #4358, #4464, #4510, #4858, #5012, #5020, #5261, #5295, #5321, #5324, #5325, #5555, #5707, #5796, #5817, #5987, #6018, #6074, #6088, #6154, #6177, #6180, #6203, #6658
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7477 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-04-27 10:50:16 +08:00
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place = models.OneToOneField(Place, primary_key=True)
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2006-05-02 09:31:56 +08:00
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serves_hot_dogs = models.BooleanField()
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serves_pizza = models.BooleanField()
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|
Merged Unicode branch into trunk (r4952:5608). This should be fully
backwards compatible for all practical purposes.
Fixed #2391, #2489, #2996, #3322, #3344, #3370, #3406, #3432, #3454, #3492, #3582, #3690, #3878, #3891, #3937, #4039, #4141, #4227, #4286, #4291, #4300, #4452, #4702
git-svn-id: http://code.djangoproject.com/svn/django/trunk@5609 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2007-07-04 20:11:04 +08:00
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def __unicode__(self):
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return u"%s the restaurant" % self.place.name
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2006-05-02 09:31:56 +08:00
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class Waiter(models.Model):
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restaurant = models.ForeignKey(Restaurant)
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2007-08-05 13:14:46 +08:00
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name = models.CharField(max_length=50)
|
2006-05-02 09:31:56 +08:00
|
|
|
|
Merged Unicode branch into trunk (r4952:5608). This should be fully
backwards compatible for all practical purposes.
Fixed #2391, #2489, #2996, #3322, #3344, #3370, #3406, #3432, #3454, #3492, #3582, #3690, #3878, #3891, #3937, #4039, #4141, #4227, #4286, #4291, #4300, #4452, #4702
git-svn-id: http://code.djangoproject.com/svn/django/trunk@5609 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2007-07-04 20:11:04 +08:00
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def __unicode__(self):
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return u"%s the waiter at %s" % (self.name, self.restaurant)
|
2006-05-02 09:31:56 +08:00
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2006-09-26 10:58:36 +08:00
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class ManualPrimaryKey(models.Model):
|
2007-08-05 13:14:46 +08:00
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primary_key = models.CharField(max_length=10, primary_key=True)
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name = models.CharField(max_length = 50)
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2006-09-26 10:58:36 +08:00
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class RelatedModel(models.Model):
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link = models.OneToOneField(ManualPrimaryKey)
|
2007-08-05 13:14:46 +08:00
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name = models.CharField(max_length = 50)
|
2006-09-26 10:58:36 +08:00
|
|
|
|
Merged the queryset-refactor branch into trunk.
This is a big internal change, but mostly backwards compatible with existing
code. Also adds a couple of new features.
Fixed #245, #1050, #1656, #1801, #2076, #2091, #2150, #2253, #2306, #2400, #2430, #2482, #2496, #2676, #2737, #2874, #2902, #2939, #3037, #3141, #3288, #3440, #3592, #3739, #4088, #4260, #4289, #4306, #4358, #4464, #4510, #4858, #5012, #5020, #5261, #5295, #5321, #5324, #5325, #5555, #5707, #5796, #5817, #5987, #6018, #6074, #6088, #6154, #6177, #6180, #6203, #6658
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7477 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-04-27 10:50:16 +08:00
|
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|
class MultiModel(models.Model):
|
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|
link1 = models.OneToOneField(Place)
|
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|
link2 = models.OneToOneField(ManualPrimaryKey)
|
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|
name = models.CharField(max_length=50)
|
|
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|
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|
def __unicode__(self):
|
|
|
|
return u"Multimodel %s" % self.name
|