Ruby on rails Rails在多个类别上自动完成

下面我将使用jqueryui中的autocomplete在搜索框中实现自动完成。然而，我也希望能够包括每个搜索建议所属的类别，并对建议进行分组，类似于潘多拉如何在歌曲/艺术家/专辑上进行匹配

我的模型如下所示：

class SearchSuggestion < ActiveRecord::Base
  attr_accessible :popularity, :term, :type

  def self.terms_for(prefix)
     suggestions = where("term like ?", "#{prefix}_%")
     suggestions.order("popularity desc").limit(10).pluck(:term)
  end
end

class SearchSuggestionsController < ApplicationController
  def index
    render json: SearchSuggestion.terms_for(params[:term])
  end
end

def self.terms_for(prefix)
   suggestions = where("term like ?", "#{prefix}_%").order("popularity desc").limit(10)
   suggestions.collect {|suggestion| {"value" => suggestion["term"], "type" => suggestion["suggestion_type"] }}
end

classsearchsuggestion

我的控制器是这样的：

class SearchSuggestion < ActiveRecord::Base
  attr_accessible :popularity, :term, :type

  def self.terms_for(prefix)
     suggestions = where("term like ?", "#{prefix}_%")
     suggestions.order("popularity desc").limit(10).pluck(:term)
  end
end

class SearchSuggestionsController < ApplicationController
  def index
    render json: SearchSuggestion.terms_for(params[:term])
  end
end

def self.terms_for(prefix)
   suggestions = where("term like ?", "#{prefix}_%").order("popularity desc").limit(10)
   suggestions.collect {|suggestion| {"value" => suggestion["term"], "type" => suggestion["suggestion_type"] }}
end

class SearchSuggestionController

---

我如何修改术语以便可以包括：以autocomplete可以处理的格式键入json，我将如何呈现它？

我找到了一种方法来做我想做的事情，所以我想我会回答我自己的问题。我发现了handy collect方法，并编写了如下函数：

class SearchSuggestion < ActiveRecord::Base
  attr_accessible :popularity, :term, :type

  def self.terms_for(prefix)
     suggestions = where("term like ?", "#{prefix}_%")
     suggestions.order("popularity desc").limit(10).pluck(:term)
  end
end

class SearchSuggestionsController < ApplicationController
  def index
    render json: SearchSuggestion.terms_for(params[:term])
  end
end

def self.terms_for(prefix)
   suggestions = where("term like ?", "#{prefix}_%").order("popularity desc").limit(10)
   suggestions.collect {|suggestion| {"value" => suggestion["term"], "type" => suggestion["suggestion_type"] }}
end