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此代碼應該在每次創建新對象時將項目添加到索引。它有效，但沒有意識到正在創建M2M領域。在M2M字段上觸發Post_save信號
我相信信號不會「看」標籤（因爲它是一個M2M領域）。
換句話說：
添加標題字段只索引當對象被「創造」
只有「保存」被點擊時增加了M2M關係指數
FWIW，這是索引彈性搜索。
Models.py
class Item(models.Model):
title = models.CharField("Title", max_length=10000, blank=True)
tag = models.ManyToManyField('Tag', blank=True)
def get_grouped_tags(self):
tag = self.tag.order_by('taglevel')
grouped_tags = {
tag_level: [
{ 'name': tag_of_level.name, 'taglevel': tag_of_level.taglevel, }
for tag_of_level in tags_of_level
] for tag_level, tags_of_level
in groupby(tag, lambda tag: tag.taglevel)
}
return grouped_tags
def to_search(self):
d = {
"tags": self.grouped_tags(),
"title": self.title
}
return ItemIndex(meta={'id': self.id}, **d)
def indexing(self):
obj = ItemIndex(
meta={'id': self.id},
title=self.title,
typeItem=self.get_typeItem_display()
)
obj.save()
return obj.to_dict(include_meta=True)
def update_search(instance, **kwargs):
instance.to_search().save()
def remove_from_search(instance, **kwargs):
instance.to_search().delete()
post_save.connect(update_search, sender=Item)
post_save.connect(update_search, sender=Tag)
pre_delete.connect(remove_from_search, sender=Item)
pre_delete.connect(remove_from_search, sender=Tag)
m2m_changed.connect(update_search, sender=Item)
Search.py
connections.create_connection()
class ItemIndex(DocType):
title = String()
class Meta:
index = 'Item-index'
def bulk_indexing():
ItemIndex.init()
es = Elasticsearch()
bulk(client=es, actions=(b.indexing() for b in models.Item.objects.all().iterator()))
def _search(title):
s = Search().filter('term', title=title.text)
response = s.execute()
return response