使用 geokit 具有地理编码功能的应用程序的数据库布局
我正在开发一个房地产网络目录,并希望使用 geokit gem 对每个广告进行地理编码。 我的问题是,如果我想按国家、所选国家的城市、行政区域或所选城市最近的地铁站进行搜索,从性能角度来看,最好的数据库布局是什么。可用的国家、城市、行政区域和地铁站应由目录管理员定义,并且必须通过地理编码进行验证。
我想出了一个表:
create_table "geo_locations", :force => true do |t|
t.integer "geo_location_id" #parent geo location (ex. country is parent geo location of city
t.string "country", :null => false #necessary for any geo location
t.string "city", #not null for city geo location and it's children
t.string "administrative_area" #not null for administrative_area geo location and it's children
t.string "thoroughfare_name" #not null for metro station or street name geo location and it's children
t.string "premise_number" #house number
t.float "lng", :null => false
t.float "lat", :null => false
t.float "bound_sw_lat", :null => false
t.float "bound_sw_lng", :null => false
t.float "bound_ne_lat", :null => false
t.float "bound_ne_lng", :null => false
t.integer "mappable_id"
t.string "mappable_type"
t.string "type" #country, city, administrative area, metro station or address
end
最终地理位置是地址,它包含将房地产广告标记放在地图上的所有必要信息。但我仍然停留在搜索功能上。
任何帮助将不胜感激。
I'm developing a real estate web catalogue and want to geocode every ad using geokit gem.
My question is what would be the best database layout from the performance point if i want to make search by country, city of the selected country, administrative area or nearest metro station of the selected city. Available countries, cities, administrative areas and metro sations should be defined by the administrator of catalogue and must be validated by geocoding.
I came up with single table:
create_table "geo_locations", :force => true do |t|
t.integer "geo_location_id" #parent geo location (ex. country is parent geo location of city
t.string "country", :null => false #necessary for any geo location
t.string "city", #not null for city geo location and it's children
t.string "administrative_area" #not null for administrative_area geo location and it's children
t.string "thoroughfare_name" #not null for metro station or street name geo location and it's children
t.string "premise_number" #house number
t.float "lng", :null => false
t.float "lat", :null => false
t.float "bound_sw_lat", :null => false
t.float "bound_sw_lng", :null => false
t.float "bound_ne_lat", :null => false
t.float "bound_ne_lng", :null => false
t.integer "mappable_id"
t.string "mappable_type"
t.string "type" #country, city, administrative area, metro station or address
end
Final geo location is address it contains all neccessary information to put marker of the real estate ad on the map. But i'm still stuck on search functionality.
Any help would be highly appreciated.
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您可能想看看 Thinking Sphinx,它内置了对地理搜索的支持。我是这样做的:
You might want to have a look at Thinking Sphinx, it has support for geo-searching built in. This is how I do it: