思維 - 獅身人面像過濾

Question

我有以下型號和指數使用曲名和歌手名進行搜索跟蹤：

型號/ track.rb

class Track < ActiveRecord::Base 
    include ThinkingSphinx::Scopes 

    belongs_to :artist, :class_name => 'Fan', :foreign_key => 'fan_id' 


    sphinx_scope(:of_fan) do |fan_id| 
    {with: {fan_id: fan_id}} 
    end 

    def artist_name 
    artist.name 
    end 
end 

型號/ fan.rb

class Fan < User 
    has_many :tracks 
end 

型號/ user.rb

class User < ActiveRecord::Base 
    #Codes... 
end 

寶石列表：

gem 'rails', '4.1.0.rc1' 
gem 'thinking-sphinx', '~> 3.1.3' 

指數/ track_index.rb

ThinkingSphinx::Index.define :track, :with => :active_record, :delta => true do 
    indexes title 

    has plays_count, :as => :play_count 
end 

我試着用下面的所有選項重建索引，但沒有工作，這一塊下生成錯誤：

indexes artist(:first_name), :as => :artist_name 
indexes artist.first_name, :as => :artist_name 
indexes artist_name 
indexes [artist.first_name, artist.last_name], :as => :artist_name 

錯誤：

#For.. 
#indexes artist(:first_name), :as => :artist_name 
#indexes artist.first_name, :as => :artist_name 
ERROR: index 'track_delta': sql_range_query: ERROR: syntax error at or near "AS" 
LINE 1: ..."title" AS "title", AS "author... 
            ^
(DSN=pgsql://username:***@localhost:5432/db_name). 


#For - indexes [artist.first_name, artist.last_name], :as => :artist_name 
rake aborted! 
NoMethodError: undefined method `reflections' for nil:NilClass 
/Users/morshedalam/.rvm/gems/ruby-2.0.0-p598/gems/joiner-0.2.0/lib/joiner/joins.rb:64:in `reflection_for' 
/Users/morshedalam/.rvm/gems/ruby-2.0.0-p598/gems/joiner-0.2.0/lib/joiner/joins.rb:33:in `join_for' 
/Users/morshedalam/.rvm/gems/ruby-2.0.0-p598/gems/joiner-0.2.0/lib/joiner/joins.rb:18:in `alias_for' 
...... 

任何幫助，將不勝感激。

Answer 1

好的，我有解決方案。這個問題與木匠寶石更新有關。 Rails更新至4.1.0，加入木匠寶石的Gemfile解決我的問題：

Rails 4.1 - thinking-sphinx association not working

Answer 2

這兩個應該工作：

indexes artist.first_name, :as => :artist_name 
indexes [artist.first_name, artist.last_name], :as => :artist_name 

但這個假定，我們在您Fan模型列first_name（和last_name） - 這種情況？

此外，您正在使用思維獅身人面像和Rails的哪些版本？