使用MetaSearch通过Rails 3中的关联进行搜索

# Gemfile
gem 'metasearch'

# app/models/search.rb
class Search < Metasearch::Search
  include MetaSearch::SearchMethods

  search_attributes :name, :description
  search_associations :posts
end

# app/controllers/search_controller.rb
class SearchController< ApplicationController
  def index
    @search = Search.new(params[:search])
    @results = @search.results
  end
end

# app/views/search/index.html.erb
<% if @results.any? %>
  <ul>
    <% @results.each do |result| %>
      <li><%= result.name %> - <%= result.description %></li>
    <% end %>
  </ul>
<% else %>
  <p>No results found.</p>
<% end %>