Ruby on rails 来自深层嵌套哈希和数组的循环特定值

我是ruby新手，在通过深度嵌套哈希和数组进行循环时遇到困难

假设我有以下JSON：

{  
   "Resume":{  
               .... data ....
      },
      "StructuredXMLResume":{  
         "ContactInfo":{  
               .... data ....
               }
            ]
         },
         "EmploymentHistory":{  
            "EmployerOrg":[  
               {  
                  "EmployerOrgName":"ABC Corp.",
                  "PositionHistory":[  
                     {  
               .... data ....
                  ]
               },
               {  
                  "EmployerOrgName":"National Geo.",
                  "PositionHistory":[  
                     {  
            .... data ....
                           }
                        ]

                     }
                  ]
               }
            ]
         }

给我ABC公司的

resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"][1]["EmployerOrgName"]

给我
国家地理信息。

如何循环打印每个
员工或姓名？
使用：

resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"].each do |employer_org|
  puts employer_org["EmployerOrgName"] # or whatever you want to do with the employer_org hash
end

使用：

您可以对任何类似于数组/哈希对象或其行为类似于数组/哈希对象的“对象”使用枚举器（如each），因此在本例中，您希望：

all_employerorgs = resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"]
# which is an array of hashes that then you can iterate through 
# you could iterate directly on that but for readibility 
# I would always assign it to a var
all_employerorgs.each do |employerorg|
  puts employerorg['EmployerOrgName']
end

您可以对任何类似于数组/哈希对象或其行为类似于数组/哈希对象的“对象”使用枚举器（如each），因此在本例中，您希望：

all_employerorgs = resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"]
# which is an array of hashes that then you can iterate through 
# you could iterate directly on that but for readibility 
# I would always assign it to a var
all_employerorgs.each do |employerorg|
  puts employerorg['EmployerOrgName']
end

我还应该使用
每个
或
地图
？我对两者之间的区别感到困惑。我还应该使用
每一个
还是
映射
？我对两者的区别感到困惑。