mysql - 在 ruby​​ 数组中查找行

Question

我有一个返回此类数据的 mysql 查询:

{"id"=>1, "serviceCode"=>"1D00", "price"=>9.19}
{"id"=>2, "serviceCode"=>"1D01", "price"=>9.65}

我需要根据 serviceCode 的匹配返回 id 字段。

即我需要这样的方法

def findID(serviceCode)
    find the row that has the service code and return the ID
end

我在考虑有一个 serviceCodes.each do |row| 方法并循环并基本上去

if row == serviceCode 
  return row['id']
end

有没有更快/更简单的方法？

Answer 1

您可以使用方法Enumerable#find :

service_codes = [
  {"id"=>1, "serviceCode"=>"1D00", "price"=>9.19},
  {"id"=>2, "serviceCode"=>"1D01", "price"=>9.65}
]

service_codes.find { |row| row['serviceCode'] == '1D00' }
# => {"id"=>1, "serviceCode"=>"1D00", "price"=>9.19}