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112 lines
4.1 KiB
Python
112 lines
4.1 KiB
Python
#
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# Copyright 2016,2017
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# - Skia <skia@libskia.so>
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# - Sli <antoine@bartuccio.fr>
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#
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# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
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# http://ae.utbm.fr.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License a published by the Free Software
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# Foundation; either version 3 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
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# Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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#
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from django.db import models
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from haystack import indexes, signals
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from core.models import User
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from forum.models import ForumMessage, ForumMessageMeta
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class UserIndex(indexes.SearchIndex, indexes.Indexable):
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text = indexes.CharField(document=True, use_template=True)
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auto = indexes.EdgeNgramField(use_template=True)
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last_update = indexes.DateTimeField(model_attr="last_update")
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def get_model(self):
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return User
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def index_queryset(self, using=None):
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"""Used when the entire index for model is updated."""
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return self.get_model().objects.all()
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def get_updated_field(self):
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return "last_update"
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def prepare_auto(self, obj):
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return self.prepared_data["auto"].strip()[:245]
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class IndexSignalProcessor(signals.BaseSignalProcessor):
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def setup(self):
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# Listen only to the ``User`` model.
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models.signals.post_save.connect(self.handle_save, sender=User)
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models.signals.post_delete.connect(self.handle_delete, sender=User)
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# Listen only to the ``ForumMessage`` model.
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models.signals.post_save.connect(self.handle_save, sender=ForumMessageMeta)
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models.signals.post_delete.connect(self.handle_delete, sender=ForumMessage)
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# Listen to the ``ForumMessageMeta`` model pretending it's a ``ForumMessage``.
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models.signals.post_save.connect(
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self.handle_forum_message_meta_save, sender=ForumMessageMeta
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)
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models.signals.post_delete.connect(
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self.handle_forum_message_meta_delete, sender=ForumMessageMeta
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)
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def teardown(self):
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# Disconnect only for the ``User`` model.
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models.signals.post_save.disconnect(self.handle_save, sender=User)
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models.signals.post_delete.disconnect(self.handle_delete, sender=User)
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# Disconnect only to the ``ForumMessage`` model.
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models.signals.post_save.disconnect(self.handle_save, sender=ForumMessage)
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models.signals.post_delete.disconnect(self.handle_delete, sender=ForumMessage)
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# Disconnect to the ``ForumMessageMeta`` model pretending it's a ``ForumMessage``.
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models.signals.post_save.disconnect(
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self.handle_forum_message_meta_save, sender=ForumMessageMeta
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)
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models.signals.post_delete.disconnect(
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self.handle_forum_message_meta_delete, sender=ForumMessageMeta
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)
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def handle_forum_message_meta_save(self, sender, instance, **kwargs):
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super().handle_save(ForumMessage, instance.message, **kwargs)
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def handle_forum_message_meta_delete(self, sender, instance, **kwargs):
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super().handle_delete(ForumMessage, instance.message, **kwargs)
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class BigCharFieldIndex(indexes.CharField):
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"""Workaround to avoid xapian.InvalidArgument: Term too long (> 245).
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See https://groups.google.com/forum/#!topic/django-haystack/hRJKcPNPXqw/discussion.
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"""
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def prepare(self, term):
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return bytes(super().prepare(term), "utf-8")[:245].decode(
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"utf-8", errors="ignore"
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)
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class ForumMessageIndex(indexes.SearchIndex, indexes.Indexable):
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text = BigCharFieldIndex(document=True, use_template=True)
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auto = indexes.EdgeNgramField(use_template=True)
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date = indexes.DateTimeField(model_attr="date")
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def get_model(self):
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return ForumMessage
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