author | Nishanth Amuluru <nishanth@fossee.in> |
Sat, 08 Jan 2011 11:20:57 +0530 | |
changeset 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
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""" |
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37. Fixtures. |
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Fixtures are a way of loading data into the database in bulk. Fixure data |
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can be stored in any serializable format (including JSON and XML). Fixtures |
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are identified by name, and are stored in either a directory named 'fixtures' |
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in the application directory, on in one of the directories named in the |
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``FIXTURE_DIRS`` setting. |
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""" |
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from django.contrib.auth.models import Permission |
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from django.contrib.contenttypes import generic |
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from django.contrib.contenttypes.models import ContentType |
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from django.db import models, DEFAULT_DB_ALIAS |
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from django.conf import settings |
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class Category(models.Model): |
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title = models.CharField(max_length=100) |
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description = models.TextField() |
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def __unicode__(self): |
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return self.title |
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class Meta: |
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ordering = ('title',) |
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class Article(models.Model): |
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headline = models.CharField(max_length=100, default='Default headline') |
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pub_date = models.DateTimeField() |
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def __unicode__(self): |
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return self.headline |
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class Meta: |
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ordering = ('-pub_date', 'headline') |
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class Blog(models.Model): |
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name = models.CharField(max_length=100) |
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featured = models.ForeignKey(Article, related_name='fixtures_featured_set') |
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articles = models.ManyToManyField(Article, blank=True, |
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related_name='fixtures_articles_set') |
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def __unicode__(self): |
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return self.name |
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class Tag(models.Model): |
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name = models.CharField(max_length=100) |
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tagged_type = models.ForeignKey(ContentType, related_name="fixtures_tag_set") |
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tagged_id = models.PositiveIntegerField(default=0) |
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tagged = generic.GenericForeignKey(ct_field='tagged_type', |
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fk_field='tagged_id') |
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def __unicode__(self): |
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return '<%s: %s> tagged "%s"' % (self.tagged.__class__.__name__, |
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self.tagged, self.name) |
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class PersonManager(models.Manager): |
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def get_by_natural_key(self, name): |
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return self.get(name=name) |
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class Person(models.Model): |
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objects = PersonManager() |
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name = models.CharField(max_length=100) |
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def __unicode__(self): |
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return self.name |
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class Meta: |
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ordering = ('name',) |
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def natural_key(self): |
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return (self.name,) |
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class Visa(models.Model): |
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person = models.ForeignKey(Person) |
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permissions = models.ManyToManyField(Permission, blank=True) |
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def __unicode__(self): |
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return '%s %s' % (self.person.name, |
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', '.join(p.name for p in self.permissions.all())) |
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class Book(models.Model): |
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name = models.CharField(max_length=100) |
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authors = models.ManyToManyField(Person) |
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def __unicode__(self): |
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return '%s by %s' % (self.name, |
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' and '.join(a.name for a in self.authors.all())) |
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class Meta: |
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ordering = ('name',) |