Ruby on rails 转换区域/细分（从FIPS转换为ISO 3166，反之亦然）

我有两个数据库，一个是国家和地区（州/地区），另一个是城市

问题是，它们都使用不同的规范

国家/地区分部提供：ISO 3166-2代码（数字和字符）和 城市细分使用FIP（仅数字）

在哪里或如何将它们匹配在一起？

有可用的“地图绘制程序”吗

德国示例：

细分：勃兰登堡

• ISO 3166-2->BB
• FIPS->11

示例数据集：

国家/地区：

{"alpha2"=>"DE",
 "alpha3"=>"DEU",
 "name"=>"Germany",
 "names"=>["Germany", "Deutschland", "Allemagne", "Alemania", "ドイツ", "Duitsland"],
 "number"=>"276",
 "subdivisions" => {
    "BB"=>{"name"=>"Brandenburg", "names"=>["Brandenbourg", "Brandenburgo"]},
    "BE"=>{"name"=>"Berlin", "names"=>["Berlín"]}, 
    "BW"=>{"name"=>"Baden-Württemberg", "names"=>["Baden-Württemberg", "Baden-Wurttemberg"]},
    "BY"=>{"name"=>"Bayern", "names"=>["Bavière", "Bayern", "Bavaria"]}, 
    "HB"=>{"name"=>"Bremen", "names"=>["Brème"]},
    "HE"=>{"name"=>"Hessen", "names"=>["Hessen", "Hesse"]},
    "HH"=>{"name"=>"Hamburg", "names"=>["Amburgo", "Hambourg", "Hamburgo"]},
    "MV"=>{"name"=>"Mecklenburg-Vorpommern", "names"=>["Mecklenburg-Vorpommern"]},
    "NI"=>{"name"=>"Niedersachsen", "names"=>["Niedersachsen"]},
    "NW"=>{"name"=>"Nordrhein-Westfalen", "names"=>["Nordrhein-Westfalen", "Rhénanie-Westphalie"]}, 
    "RP"=>{"name"=>"Rheinland-Pfalz", "names"=>["Rheinland-Pfalz", "Rhénanie-Palatinat"]},
    "SH"=>{"name"=>"Schleswig-Holstein", "names"=>"Schleswig-Holstein"}, 
    "SL"=>{"name"=>"Saarland", "names"=>"Saarland"},
    "SN"=>{"name"=>"Sachsen", "names"=>["Sachsen"]},
    "ST"=>{"name"=>"Sachsen-Anhalt", "names"=>"Sachsen-Anhalt"},
    "TH"=>{"name"=>"Thüringen", "names"=>["Thüringen", "Thuringen"]}}}

 {"alpha2"=>"AT",
 "alpha3"=>"AUT",
 "name"=>"Austria",
 "names"=>["Austria", "Österreich", "Autriche", "オーストリア", "Oostenrijk"],
 "number"=>"276",
 "subdivisions" => {  
    "1"=>{"name"=>"Burgenland", "names"=>"Burgenland"}, 
    "2"=>{"name"=>"Kärnten", "names"=>["Carinthia", "Koroška"]},
    "3"=>{"name"=>"Niederösterreich", "names"=>["Lower Austria"]}, 
    "4"=>{"name"=>"Oberösterreich", "names"=>["Upper Austria"]},
    "5"=>{"name"=>"Salzburg", "names"=>["Salzbourg"]},
    "6"=>{"name"=>"Steiermark", "names"=>["Styria"]},
    "7"=>{"name"=>"Tirol", "names"=>["Tyrol"]}, 
    "8"=>{"name"=>"Vorarlberg", "names"=>"Vorarlberg"}, 
    "9"=>{"name"=>"Wien", "names"=>["Wien", "Vienna"]}}}

{"country_code"=> "DE",
 "region" => "11", 
"name" => "Brandenburg"}

{"country_code"=> "AT",
 "region" => "5", 
"name" => "Salzburg"}

城市：

{"alpha2"=>"DE",
 "alpha3"=>"DEU",
 "name"=>"Germany",
 "names"=>["Germany", "Deutschland", "Allemagne", "Alemania", "ドイツ", "Duitsland"],
 "number"=>"276",
 "subdivisions" => {
    "BB"=>{"name"=>"Brandenburg", "names"=>["Brandenbourg", "Brandenburgo"]},
    "BE"=>{"name"=>"Berlin", "names"=>["Berlín"]}, 
    "BW"=>{"name"=>"Baden-Württemberg", "names"=>["Baden-Württemberg", "Baden-Wurttemberg"]},
    "BY"=>{"name"=>"Bayern", "names"=>["Bavière", "Bayern", "Bavaria"]}, 
    "HB"=>{"name"=>"Bremen", "names"=>["Brème"]},
    "HE"=>{"name"=>"Hessen", "names"=>["Hessen", "Hesse"]},
    "HH"=>{"name"=>"Hamburg", "names"=>["Amburgo", "Hambourg", "Hamburgo"]},
    "MV"=>{"name"=>"Mecklenburg-Vorpommern", "names"=>["Mecklenburg-Vorpommern"]},
    "NI"=>{"name"=>"Niedersachsen", "names"=>["Niedersachsen"]},
    "NW"=>{"name"=>"Nordrhein-Westfalen", "names"=>["Nordrhein-Westfalen", "Rhénanie-Westphalie"]}, 
    "RP"=>{"name"=>"Rheinland-Pfalz", "names"=>["Rheinland-Pfalz", "Rhénanie-Palatinat"]},
    "SH"=>{"name"=>"Schleswig-Holstein", "names"=>"Schleswig-Holstein"}, 
    "SL"=>{"name"=>"Saarland", "names"=>"Saarland"},
    "SN"=>{"name"=>"Sachsen", "names"=>["Sachsen"]},
    "ST"=>{"name"=>"Sachsen-Anhalt", "names"=>"Sachsen-Anhalt"},
    "TH"=>{"name"=>"Thüringen", "names"=>["Thüringen", "Thuringen"]}}}

 {"alpha2"=>"AT",
 "alpha3"=>"AUT",
 "name"=>"Austria",
 "names"=>["Austria", "Österreich", "Autriche", "オーストリア", "Oostenrijk"],
 "number"=>"276",
 "subdivisions" => {  
    "1"=>{"name"=>"Burgenland", "names"=>"Burgenland"}, 
    "2"=>{"name"=>"Kärnten", "names"=>["Carinthia", "Koroška"]},
    "3"=>{"name"=>"Niederösterreich", "names"=>["Lower Austria"]}, 
    "4"=>{"name"=>"Oberösterreich", "names"=>["Upper Austria"]},
    "5"=>{"name"=>"Salzburg", "names"=>["Salzbourg"]},
    "6"=>{"name"=>"Steiermark", "names"=>["Styria"]},
    "7"=>{"name"=>"Tirol", "names"=>["Tyrol"]}, 
    "8"=>{"name"=>"Vorarlberg", "names"=>"Vorarlberg"}, 
    "9"=>{"name"=>"Wien", "names"=>["Wien", "Vienna"]}}}

{"country_code"=> "DE",
 "region" => "11", 
"name" => "Brandenburg"}

{"country_code"=> "AT",
 "region" => "5", 
"name" => "Salzburg"}

非常非常感谢