ruby-on-rails – Elasticsearch查询不返回正确的数据

我正在使用 Chewy gem将 Elasticsearch集成到我的Rails项目中.
我为名为(Listing)的模型和我使用Chewy es dsl的搜索界面设置了索引.

listings_index.rb

class ListingsIndex < Chewy::Index
  settings analysis: {
    analyzer: {
      exact: {
        tokenizer: 'keyword',filter: ['lowercase']
      }
    }
  }
  define_type Listing.available.includes(:listing_images,:user) do
    field :id,type: 'integer'
    field :listing_type,analyzer: 'exact'
    field :status,analyzer: 'exact'
    field :bedrooms,type: 'integer'
    field :price,type: 'integer'
    field :tenant_fee,type: 'integer'
    field :neighborhood_id,type: 'integer'
    field :bathrooms,type: 'float'
    field :lat,type: 'float'
    field :lng,type: 'float'
    field :available_date,type: 'date'
    field :full_address,type: 'text'
    field :title,type: 'text'
    field :user_last_active_at,value: ->(listing) { listing.user.last_active_at } # last_active_at on the User model is of type date
    field :street,value: ->(listing) { listing.street }
    field :listing_images do
      field :image,type: 'object'
    end
    field :coordinates,type: 'geo_point',value: ->{ { lat: lat,lon: lng } }
  end
end

listing_search.rb

class ListingSearch
  include ActiveData::Model
  attribute :bedrooms,type: Integer
  attribute :listing_type,type: String
  attribute :price_min,type: String
  attribute :price_max,type: String
  attribute :date,type: String
  attribute :neighborhoods,type: Array

  def index
    ListingsIndex
  end

 def search
   [base_filter,neighborhood_ids_filter,price_filter,date_filter,bed_filter,apt_type_filter,sorting].compact.reduce(:merge)
 end

 def sorting
   index.order({ user_last_active_at: :desc})
 end

 def base_filter
    index.filter(term: {status: 'available'}).limit(4000)
 end

 def apt_type_filter
   if !listing_type.blank? && listing_type =~ /\d/
     if listing_type == '1'
       index.filter(term: { listing_type: "full" })
     end
     if listing_type == '0'
       index.filter(term: { listing_type: "share" })
     end
   end
 end

 def bed_filter
   return unless bedrooms.present?
   index.filter(term: { bedrooms: bedrooms.to_i })
 end

 def date_filter
   return unless date.present?
   parse_date = Chronic.parse(date,{:guess => false}).first
   body = {}.tap do |body|
     body.merge!(gte: parse_date) if date?
   end
   index.filter(range: {available_date: body}) if body.present?
 end

 def price_filter
  return if price_min == 'Min $' && price_max == 'Max $'
  if price_min != 'Min $' && price_max != 'Max $'
    body = {}.tap do |body|
      body.merge!(gte: price_min.to_i) if price_min?
      body.merge!(lte: price_max.to_i) if price_max?
    end
  elsif price_min == 'Min $' && price_max != 'Max $'
    body = {}.tap do |body|
      body.merge!(lte: price_max) if price_max?
    end
  elsif price_min != 'Min $' && price_max == 'Max $'
    body = {}.tap do |body|
      body.merge!(gte: price_min) if price_min?
    end
  end
   index.filter(range: {price: body}) if body.present?
 end

 def neighborhood_ids_filter
   index.filter(terms: {neighborhood_id: neighborhoods}) if neighborhoods?
 end
end

第一个问题是过滤器apt_type_filter.它不会返回正确的数据.

第二个问题是当我使用排序方法对数据进行排序时,我得到了一个ES BadRequest错误：

Elasticsearch::Transport::Transport::Errors::BadRequest: [400] {"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Fielddata is disabled on text fields by default. Set fielddata=true on [user_last_active_at] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."}],"type":"search_phase_execution_exception","reason":"all shards Failed","phase":"query","grouped":true,"Failed_shards":[{"shard":0,"index":"listings","node":"IYxQCcHESTWOaitD9XtDFA","reason":{"type":"illegal_argument_exception","reason":"Fielddata is disabled on text fields by default. Set fielddata=true on [user_last_active_at] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."}}]},"status":400}

这是Chewy的索引Query对象的输出：

<ListingsIndex::Query {:index=>["listings"],:type=>["listing"],:body=>{:size=>4000,:query=>{:bool=>{:filter=>[{:bool=>{:must=>[{:bool=>{:must=>[{:bool=>{:must=>[{:term=>{:status=>"available"}},{:terms=>{:neighborhood_id=>["45"]}}]}},{:range=>{:price=>{:gte=>800,:lte=>3000}}}]}},{:range=>{:available_date=>{:gte=>2018-02-01 00:00:00 +0100}}}]}},{:term=>{:bedrooms=>1}}]}}}}>

任何帮助都会很棒.谢谢.

解决方法

第一部分：
您应该能够从ES客户端获取elasticsearch的查询.这将有助于调试该过滤器不起作用的原因.
关于第二部分,您的user_last_active_at应该具有哪种类型？你的映射非常好.
错误消息说user_last_active_at在索引中是字符串类型,因此您需要在映射中为该字段启用field_data(查看 here)