ruby - 使用 Ruby，我如何只打印 MongoDB 查询结果的值

Question

我只想打印相关字段的值 ( name)。它现在所做的是打印以下内容。

nameHOSTA
nameHOSTB

我要打印

HOSTA
HOSTB

询问 ...

puts collection.find({"environment_name" => role, "type" => "TF"}, {:fields => {"_id" => 0, "name" =>
    1}}).to_a

Answer 1

我认为这样的事情应该让你想要你想要的：

collection.find({"environment_name" => role, "type" => "TF"}, {:fields => {"_id" => 0, "name" =>1}}).each { |item| 
    puts item['name'] 
}