2

我在我的应用程序中使用了Geocoder和Sunspot gem，并且我有一个名为的字段，该字段:search_near_address假设让用户能够输入他们想要在其中搜索附近的地址X amount of miles。我试图映射到的是我的商店:address用于该:search_near_address领域。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 50 英里的半径范围内进行搜索。

回答

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 %>
4

2 回答 2

7

首先@m_x 说的是对的，你不能指望将 Store#near 结果分配给@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东西：

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

然后您可以像这样搜索（在索引某些内容之后）： 

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

还可以在此处阅读 :precision 选项http://sunspot.github.com/docs/Sunspot/DSL/RestrictionWithNear.html#near-instance_method

关于地理编码器https://github.com/alexreisner/geocoder

于 2011-12-17T19:42:41.380 回答
3

不确定我是否完全理解您对上述内容的尝试，但在尝试让地理编码器和太阳黑子一起玩时，我遇到了类似的情况。

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

本质上，我试图将两个结果集结合起来，只带回与距离和关键字词相匹配的结果。

希望这至少对某人有所帮助。

于 2011-12-14T22:51:53.693 回答