Question

我开始使用python库elasticsearch-dsl。

我正在尝试实现父子关系，但它无法正常工作：

    class Location(DocType):
        name = String(analyzer='snowball', fields={'raw': String(index='not_analyzed')})
        latitude = String(analyzer='snowball')
        longitude = String(analyzer='snowball')
        created_at = Date()

   class Building(DocType):
       parent = Location()

Answer 1

elasticsearch-dsl使用MetaField内置了父子关系：

class Location(DocType):
    name = String(analyzer='snowball', fields={'raw': String(index='not_analyzed')})
    latitude = String(analyzer='snowball')
    longitude = String(analyzer='snowball')
    created = Date()

    class Meta:
        doc_type = 'location' 

class Building(DocType):

    class Meta:
        doc_type = 'building'
        parent = MetaField(type='location')

如何插入和查询（HT到@Maresh）：
   - DSL得到：ChildDoc.get(id=child_id, routing=parent_id)
   - DSL插入：我相信它child.save(id=child_id, routing=parent_id)
   - 字典插入：在字典中指定'_parent': parent_id

Answer 2

好的，谢谢大家。对我有用的简单而凌乱的解决方案是使用：

from elasticsearch_dsl import Mapping

mcc = Mapping(typeChild)
mcc.meta('_parent', type=typeParent)
mcc.field(fieldName, 'string', fielddata=True, store=True)
mcc.save(index)

在创建父doc-type

之前

python elasticsearch-dsl父子关系

2 个答案: