Created
March 16, 2011 15:08
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Example models.py file for djang-haystack
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| # models.py | |
| from django.db import models | |
| from django.contrib.auth.models import User | |
| import datetime | |
| class Ejournal(models.Model): | |
| user = models.ForeignKey(User) | |
| title = models.CharField( max_length=200) | |
| author = models.ManyToManyField(blank=True, null=True) | |
| publisher = models.CharField(default='', blank=True, max_length=200) | |
| publish_date = models.DateTimeField( default=datetime.datetime.now ) | |
| abstract = models.TextField(default='', blank=True ) | |
| categories = models.ManyToManyField('Category', blank=True, null=True) | |
| def __unicode__(self): | |
| return self.title | |
| class Category(models.Model): | |
| title = models.CharField(max_length=200) | |
| title_zh = models.CharField(max_length=200) | |
| parent = models.ForeignKey('self', blank=True, null=True) | |
| def __unicode__(self): | |
| return self.parent and "%s---%s" % (self.parent.title, self.title) or self.title | |
| class Author(models.Model): | |
| title = models.CharField(max_length=200) | |
| def __unicode__(self): | |
| return self.title | |
| # search_indexes.py | |
| import datetime | |
| from haystack.indexes import * | |
| from haystack import site | |
| from ejournal.models import Ejournal, Category, Author | |
| class EjournalIndex(RealTimeSearchIndex): | |
| text = CharField(document=True, use_template=True) | |
| publish_date = DateTimeField(model_attr='publish_date') | |
| publisher = CharField(model_attr='publisher') | |
| language = CharField(model_attr='language') | |
| categories = MultiValueField(faceted=True) | |
| author = MultiValueField(faceted=True) | |
| def prepare_categories(self, obj): | |
| return [item.title for item in obj.categories.all()] | |
| def prepare_author(self, obj): | |
| return [item.title for item in obj.author.all()] | |
| def get_queryset(self): | |
| """Used when the entire index for model is updated.""" | |
| return Ejournal.objects.filter(publish_date__lte=datetime.datetime.now()) | |
| def _setup_save(self, model): | |
| super(EjournalIndex, self)._setup_save(model) | |
| signals.m2m_changed.connect( self.update_object, sender=Ejournal.author.through) | |
| site.register(Ejournal, EjournalIndex) |
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