Question

I’m work with json gem in ruby. Im trying to print second level field such as [address/city/born_in].My ruby code is

json = File.read('person.json')
person = JSON.parse(json)
pp person
puts person["address"]["city"]["born_in"]

My json file as follows..,

{
“FirstName”:”John”,
“lastName”:”Smith”,
“age”:25,
“address”:[
{
“streetAddress”:”21 2nd Street”,
“state”:”NY”,
“postalCode”:”10021″
},
{
“city”:{
“born_in”:”New York”,
“living_in”:”Mumbai”
}
}
]
}

It shows the following error..,

parsingjson.rb:15:in `[]': can't convert String into Integer (TypeError)
        from parsingjson.rb:15:in `<main>'

Answer 1

Your address field is an array. You should use indexes to refer to its elements.

puts person["address"][0]["streetaddress"]
puts person["address"][1]["city"]["born_in"]