ruby-on-rails - 如何使用Elasticsearch Rails仅搜索教科书模型的标题？

Question

编辑1:
我怎样才能使任何教科书:title具有“java”？它仅与教科书完全匹配“java”。如果书名是“java2”或“java-algo”，则不会显示。

嗨，我安装了elasticsearch，它正在工作。
我有教科书模型:

require 'elasticsearch/model'
class Textbook < ActiveRecord::Base
    include Elasticsearch::Model
    include Elasticsearch::Model::Callbacks

    belongs_to :user


    #below is for sunspot
    #searchable do
        #text :title, :default_boost => 2
        #text :subject
    #end

    #include ActiveModel::Validations
    validates :title, :presence => true
    validates :subject, :presence => true
    validates :price, :presence => true
    validates :offer, :presence => false
    validates :user_email, :presence => true
    validates :description, :presence => true
end

Textbook.import

但是当我搜索例如“java”时
不仅书籍“java”的书名，而且所有属性都有“java”显示。
我只想查看搜索结果为“j​​ava”的书

class SearchController < ApplicationController

    def search
      if params[:search].nil?
        #@textbooks = []
        @textbooks = Textbook.all.order(created_at: :desc)
      else
        @textbooks = Textbook.search params[:search]
      end
    end
end

以下是views / textbooks / index.html.erb内的搜索表单

<div>
          <%= form_tag search_path, :method => :get do %>
            <p>
              <%= text_field_tag :search, params[:search], placeholder: "Search textbooks" %>
            <%= submit_tag "Search", :title => nil, class: "btn btn-success btn-sm" %>
          <% end %>
        </div>

更新!＃!＃!＃!＃!＃!＃!

当我尝试执行以下建议时:

@textbooks = Textbook.search index: 'INDEXNAME', body: {query: { constant_score: { filter: {term: { title: params[:search]} } }}}

我得到了惊吓:

[400] {"error":{"root_cause":[{"type":"search_parse_exception","reason":"failed to parse search source. unknown search element [index]","line":1,"col":2}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"textbooks","node":"RPfuoi8FQLWkC8OIj5uUNQ","reason":{"type":"search_parse_exception","reason":"failed to parse search source. unknown search element [index]","line":1,"col":2}}]},"status":400}
Extracted source (around line #18):

          <tbody>
            <% @textbooks.each do |textbook| %>
              <tr>
                <!--<td><%= textbook.title %></td>-->
                <td><%=link_to "#{textbook.title}", textbook_path(textbook.id) %></td>

我的目标是从型号名称 :title中找到任何匹配的 :subject和 Textbook属性

Answer 1

你这样子

Textbook.search index: 'INDEXNAME', body: { query: { match: { title: params[:search] } } }

句法:

    Textbook.search index: 'INDEXNAME', body: { query: { match: { COLUMN_NAME: STRING } } }

对于非复杂和更简单的用法:
你可以尝试 searchkick gem

它使用简单直接的前言。它基本上建立在elasticsearch gem之上。