Ruby on Rails - 限制地理编码器对城市的响应并获取 ID

Question

我有一个带有users 表的Ruby on Rails 项目，我需要存储来自用户输入的location_id。

• 如果用户输入Buckingham Palace，那么location_id 应该是london_id

• 如果用户输入Wall Street，那么location_id 应该是new_york_id

• 如果用户输入Statue of Liberty，那么location_id 应该是new_york_id

• 如果用户键入 United States，则 location_id 应为 nil

我正在使用geocoder gem，但我无法检索城市 ID。例如：

Geocoder.search("London").first.place_id # => ChIJdd4hrwug2EcRmSrV3Vo6llI
Geocoder.search("Buckingham Palace").first.place_id # => ChIJtV5bzSAFdkgRpwLZFPWrJgo

我需要两者都是 ChIJdd4hrwug2EcRmSrV3Vo6llI（伦敦 ID）

Answer 1

这是我的更新答案。它集成在Geocoder结构中，如果查询的是城市名称，只需一次搜索：

require 'geocoder'

module Geocoder
  # Returns the Google ID of the city containing the queried location. Returns nil if nothing found or if location contains multiple cities.
  def self.get_city_id(query, options={})
    results = search(query, options)
    unless results.empty?
      result = results.first
      city = result.city
      if city then
        if city == query then
          result.place_id
        else
          sleep(1)
          search(city,options).first.place_id
        end
      end
    end
  end
end

Geocoder::Configuration.timeout = 15

["London", "Buckingham Palace", "Wall Street", "Statue of Liberty Monument", "United States", "WEIRDqueryWithNoResult"].each{|query|
  puts query
  puts Geocoder.get_city_id(query).inspect
  sleep(1)
}

它输出：

London
"ChIJdd4hrwug2EcRmSrV3Vo6llI"
Buckingham Palace
"ChIJdd4hrwug2EcRmSrV3Vo6llI"
Wall Street
"ChIJOwg_06VPwokRYv534QaPC8g"
Statue of Liberty Monument
"ChIJOwg_06VPwokRYv534QaPC8g"
United States
nil
WEIRDqueryWithNoResult
nil

出于文档目的，这是我的原始答案：

require 'geocoder'


def get_city(search_term)
  Geocoder.search(search_term).first.city
end

def get_place_id(search_term)
  Geocoder.search(search_term).first.place_id
end

["London", "Buckingham Palace", "Wall Street", "Statue of Liberty Monument", "United States"].each{|term|
  puts (city=get_city(term)) && sleep(1) && get_place_id(city)
  sleep(1)
}