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112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
# -*- coding:utf-8 -*-
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#
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# Copyright 2023 © AE UTBM
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# ae@utbm.fr / ae.info@utbm.fr
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# All contributors are listed in the CONTRIBUTORS file.
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#
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# This file is part of the website of the UTBM Student Association (AE UTBM),
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# https://ae.utbm.fr.
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#
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# You can find the whole source code at https://github.com/ae-utbm/sith3
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#
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# LICENSED UNDER THE GNU GENERAL PUBLIC LICENSE VERSION 3 (GPLv3)
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# SEE : https://raw.githubusercontent.com/ae-utbm/sith3/master/LICENSE
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# OR WITHIN THE LOCAL FILE "LICENSE"
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#
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# PREVIOUSLY LICENSED UNDER THE MIT LICENSE,
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# SEE : https://raw.githubusercontent.com/ae-utbm/sith3/master/LICENSE.old
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# OR WITHIN THE LOCAL FILE "LICENSE.old"
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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(IndexSignalProcessor, self).handle_save(
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ForumMessage, instance.message, **kwargs
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)
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def handle_forum_message_meta_delete(self, sender, instance, **kwargs):
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super(IndexSignalProcessor, self).handle_delete(
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ForumMessage, instance.message, **kwargs
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)
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class BigCharFieldIndex(indexes.CharField):
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"""
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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(BigCharFieldIndex, self).prepare(term), "utf-8")[
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:245
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].decode("utf-8", errors="ignore")
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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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