Question

我在我的应用程序中使用Geocoder和Sunspot gem，我有一个名为:search_near_address的字段，可以让用户输入他们想要搜索的地址在X amount of miles附近。我要映射的是我的商店:address，用于:search_near_address字段。这样，用户可以在:search_near_address字段中输入地址（即451 University Avenue，Palo Alto，CA），它将在半径50英里内搜索。

答案

太阳黑子1.2.1

class Store < ActiveRecord::Base
   attr_accessible :address, :latitude, :longitude
   has_many :products
   geocoded_by :address
   after_validation :geocode
   reverse_geocoded_by :latitude, :longitude
   after_validation :reverse_geocode      
end

class Product < ActiveRecord::Base
   belongs_to :store

   searchable do # Searching with product model.
     string :search_near # For rake sunspot:reindex
     location :location
   end

   def search_near_address
 store.address if store # You may have to use the "if store".
   end

   def location
    # may need the "if store" after longitude)....
Sunspot::Util::Coordinates.new(store.latitude, store.longitude)
   end
end

class SearchController < ApplicationController

  def index
    @search = Product.search do |q| # Search with sunspot
      q.fulltext params[:search]
      q.with(:location).near(*Geocoder.coordinates(params[:search_near_address]), :precision => 4) if params[:search_near_address].present?
    end 
    @products = @search.results # Return results from Product.search block.
  end
end

# search/index/html.erb
<%= form_tag results_search_index_path, :method => 'get' do %>
    <%= text_field_tag :search, params[:search] %>
    <%= text_field_tag :search_near_address, params[:search_near_address] %>
    <%= submit_tag "Go", :name => nil %>
<% end %>

Answer 1

首先，@ m_x说的是对的，你不能指望将@＃附近的商店＃分配到@search对象会起作用....

只需阅读https://github.com/sunspot/sunspot中有关地理空间的文档，您就可以清楚地看到您遗漏了一些内容：

您必须使用地理编码器所需的纬度和经度字段声明您的地理空间字段：

class Product < ActiveRecord::Base
   belongs_to :store

   searchable do # for Sunspot search.
     string :search_near
     latlon(:location) { 
       Sunspot::Util::Coordinates.new(category.latitude, category.longitude)
     }
   end

   def search_near
     #I changed this because business_store will not work out.
     store.address
   end
end

然后你可以搜索（在索引之后）像这样：

class SearchController < ApplicationController

  def index
    # Search with sunspot
    @search = Sunspot.search(Product) do
      fulltext params[:search]

      # The "*" pop off the elements of the array that 
      # Geocoder.coordinates returns.
      with(:location).near(*Geocoder.coordinates(params[:search_near]), 
                           :precision => 6)

      # NOTE: You could also use the in_radius method but only in the pre-release version:
      # with(:location).in_radius(*Geocoder.coordinates(params[:search_near]), 100) if params[:search_near].present?
    end

    # Return results from Product.search block.
    @products = @search.results 
  end
end

另请阅读此处的{precision选项http://sunspot.github.com/docs/Sunspot/DSL/RestrictionWithNear.html#near-instance_method

关于Geocoder https://github.com/alexreisner/geocoder

Answer 2

我不确定我是否完全理解您尝试使用上述内容的方法，但我在试图让地理编码器和太阳黑子一起玩时也有类似的情况。

这尚未经过测试，但这是我目前的想法......

Event.search do
      keywords  search_terms
      any_of do
        with(:id).any_of(Event.near(coordinates,50).map(&:id))
      end
end.results

基本上我正在尝试将两个结果集合并为仅返回与距离和关键字术语匹配的结果。

希望这至少对某人有帮助。

使用地理编码器和太阳黑子搜索？

答案

2 个答案: