最近我遇到了一个关于使用 rails4/mongoid4/tire 的弹性搜索的奇怪行为。我设法做了一个临时修复,但我想知道是否有更清洁的解决方案以及问题到底出在哪里(是弹性搜索问题吗?)
我的 Gemfile 的相关部分
gem 'rails', '4.0.0'
gem "mongoid", github: 'mongoid/mongoid'
gem 'tire'
弹性搜索版本:
"version" : {
"number" : "0.90.2",
"snapshot_build" : false,
"lucene_version" : "4.3.1"
}
我的模型:
我的模型的相关部分包括 Ad 类:
class Ad
include Mongoid::Document
field :title, type: String
[... other stuff...]
end
和 Ad 子类,其中之一是:
class AdInAutomotiveAutomobile < Ad
field :make
field :model
field :body_type
tire.index_name 'ads'
[... other stuff ...]
end
使用继承似乎没有任何重要性,但我提到它只是为了记录
问题
插入新广告不会更新“广告”索引的映射
{
"ads": {
"ad_in_automotive_automobile": {
"properties": {
"$oid": {
"type": "string"
}
}
}
}
}
日志输出,精简:
# 2013-08-02 15:40:58:387 [ad_in_automotive_automobile/51fbb6b26f87e9ab1d000001] ("ads")
#
curl -X POST "http://localhost:9200/ads/ad_in_automotive_automobile/51fbb6b26f87e9ab1d000001" -d '{
"_id": {
"$oid": "51fbb6b26f87e9ab1d000001"
},
"active": null,
"body_type": "hatchback",
"c_at": "2013-08-02T13:40:57.647Z",
"category_id": {
"$oid": "51e8020c6f87e9b8e0000001"
},
"color": null,
"description": null,
"engine_displacement": null,
"expire_at": null,
"fuel_type": null,
"locale": null,
"make": "ford",
"meta": {},
"mileage": null,
"model": "focus",
"power": null,
"price": null,
"title": "foo",
"transmission": null,
"u_at": "2013-08-02T13:40:57.647Z",
"year": null,
"category_slug": "automotive-automobile"
}'
# 2013-08-02 15:40:58:388 [201]
#
#
{
"ok": true,
"_index": "ads",
"_type": "ad_in_automotive_automobile",
"_id": "51fbb6b26f87e9ab1d000001",
"_version": 1
}
解决方案
不知何故,这:
"_id":{"$oid":"51fbb6b26f87e9ab1d000001"}
正在阻止弹性搜索更新映射所以我在#to_indexed_json
方法中“修复”了这个:
def to_indexed_json
to_json(methods: [:category_slug]).gsub( /\{\"\$oid\"\:(\".{24}\")\}/ ) { $1 }
end
结果是:
# 2013-08-02 15:50:08:689 [ad_in_automotive_automobile/51fbb8fb6f87e9ab1d000002] ("ads")
#
curl -X POST "http://localhost:9200/ads/ad_in_automotive_automobile/51fbb8fb6f87e9ab1d000002" -d '{
"_id": "51fbb8fb6f87e9ab1d000002",
"active": null,
"body_type": "hatchback",
"c_at": "2013-08-02T13:50:08.593Z",
"category_id": "51e8020c6f87e9b8e0000001",
"color": null,
"description": null,
"engine_displacement": null,
"expire_at": null,
"fuel_type": null,
"locale": null,
"make": "ford",
"meta": {},
"mileage": null,
"model": "focus",
"power": null,
"price": null,
"title": "foo",
"transmission": null,
"u_at": "2013-08-02T13:50:08.593Z",
"year": null,
"category_slug": "automotive-automobile"
}'
# 2013-08-02 15:50:08:690 [201]
#
#
{
"ok": true,
"_index": "ads",
"_type": "ad_in_automotive_automobile",
"_id": "51fbb8fb6f87e9ab1d000002",
"_version": 1
}
现在映射就可以了:
{
"ads": {
"ad_in_automotive_automobile": {
"properties": {
"$oid": {
"type": "string"
},
"body_type": {
"type": "string"
},
"c_at": {
"type": "date",
"format": "dateOptionalTime"
},
"category_id": {
"type": "string"
},
"category_slug": {
"type": "string"
},
"make": {
"type": "string"
},
"meta": {
"type": "object"
},
"model": {
"type": "string"
},
"title": {
"type": "string"
},
"u_at": {
"type": "date",
"format": "dateOptionalTime"
}
}
}
}
}
问题,再一次
为什么会这样?
堆栈的哪一部分对此负责?
它可以以更清洁的方式修复吗?