[英]How do I access the data in JSON converted to hash by crack in ruby?
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companies
指向的阵列。
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