author | Nishanth Amuluru <nishanth@fossee.in> |
Tue, 11 Jan 2011 14:30:25 +0530 | |
changeset 142 | e848bd3ad41f |
parent 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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""" |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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8. get_latest_by |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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Models can have a ``get_latest_by`` attribute, which should be set to the name |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
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of a ``DateField`` or ``DateTimeField``. If ``get_latest_by`` exists, the |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
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model's manager will get a ``latest()`` method, which will return the latest |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
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object in the database according to that field. "Latest" means "having the date |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
changeset
|
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farthest into the future." |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
diff
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""" |
c6bca38c1cbf
Added buildout stuff and made changes accordingly
Nishanth Amuluru <nishanth@fossee.in>
parents:
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c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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from django.db import models |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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class Article(models.Model): |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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headline = models.CharField(max_length=100) |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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pub_date = models.DateField() |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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expire_date = models.DateField() |
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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class Meta: |
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get_latest_by = 'pub_date' |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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|
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def __unicode__(self): |
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return self.headline |
c6bca38c1cbf
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|
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class Person(models.Model): |
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name = models.CharField(max_length=30) |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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birthday = models.DateField() |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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|
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# Note that this model doesn't have "get_latest_by" set. |
c6bca38c1cbf
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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|
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Nishanth Amuluru <nishanth@fossee.in>
parents:
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def __unicode__(self): |
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return self.name |