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ruby-on-rails – 如何通过ruby中的破解访问转换为哈希的JSON中的数据?

运维开发网 https://www.qedev.com 2020-08-11 10:16 出处:网络 作者:运维开发网整理
以下是破解文档中的示例: json = '{"posts":[{"title":"Foobar"}, {"title":"Another"}]}' Crack::JSON.parse(json) => {"posts"=>[{"title"=>"Foobar"}, {"title"=>"Another"}]} 但是,我如何实际访问哈希中的数据? 我尝试过以下方法: array = Crack::J
以下是破解文档中的示例:

json = '{"posts":[{"title":"Foobar"}, {"title":"Another"}]}'
Crack::JSON.parse(json)
=> {"posts"=>[{"title"=>"Foobar"}, {"title"=>"Another"}]}

但是,我如何实际访问哈希中的数据?

我尝试过以下方法:

array = Crack::JSON.parse(json)
array["posts"]

array [“posts”]显示所有值,但我尝试了数组[“posts”] [“title”]并且它不起作用.

以下是我要解析的例子:

{"companies"=>[{"city"=>"San Mateo", "name"=>"Jigsaw", "address"=>"777 Mariners Island Blvd Ste 400", "zip"=>"94404-5059", "country"=>"USA", "companyId"=>4427170, "activeContacts"=>168, "graveyarded"=>false, "state"=>"CA"}], "totalHits"=>1}

我想访问公司下的各个元素……比如城市和名字.

像这样?

hash = {
  "companies" => [
    {
      "city"           => "San Mateo", 
      "name"           => "Jigsaw", 
      "address"        => "777 Mariners Island Blvd Ste 400", 
      "zip"            => "94404-5059", 
      "country"        => "USA", 
      "companyId"      => 4427170, 
      "activeContacts" => 168, 
      "graveyarded"    => false, 
      "state"          => "CA"
    }
  ], 
  "totalHits" => 1
}

hash['companies'].each{ |i| 
  puts "city => #{i['city']}"
  puts "name => #{i['name']}" 
}
# >> city => San Mateo
# >> name => Jigsaw

hash['companies'][0]['city'] # => "San Mateo"
hash['companies'][0]['name'] # => "Jigsaw"

问题是你没有考虑公司指向的阵列.

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