app/django/contrib/sites/managers.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Wed, 01 Oct 2008 19:21:09 +0000
changeset 249 325fb70c61a9
parent 54 03e267d67478
permissions -rw-r--r--
Replace common module with validate module. Move validation function from feed module to validate module and remove feed.py. Correct any usage of validation functions from common and feed modules into validate module. Patch by: Pawel Solyga Review by: to-be-reviewed
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from django.conf import settings
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from django.db import models
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from django.db.models.fields import FieldDoesNotExist
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class CurrentSiteManager(models.Manager):
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    "Use this to limit objects to those associated with the current site."
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    def __init__(self, field_name='site'):
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        super(CurrentSiteManager, self).__init__()
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        self.__field_name = field_name
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        self.__is_validated = False
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    def get_query_set(self):
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        if not self.__is_validated:
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            try:
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                self.model._meta.get_field(self.__field_name)
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            except FieldDoesNotExist:
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                raise ValueError, "%s couldn't find a field named %s in %s." % \
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                    (self.__class__.__name__, self.__field_name, self.model._meta.object_name)
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            self.__is_validated = True
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        return super(CurrentSiteManager, self).get_query_set().filter(**{self.__field_name + '__id__exact': settings.SITE_ID})