I am trying to create a nested hash from an array that has several elements saved to it. I've tried experimenting with each_with_object
, each_with_index
, each
and map
.
class Person
attr_reader :name, :city, :state, :zip, :hobby
def initialize(name, hobby, city, state, zip)
@name = name
@hobby = hobby
@city = city
@state = state
@zip = zip
end
end
steve = Person.new("Steve", "basketball","Dallas", "Texas", 75444)
chris = Person.new("Chris", "piano","Phoenix", "Arizona", 75218)
larry = Person.new("Larry", "hunting","Austin", "Texas", 78735)
adam = Person.new("Adam", "swimming","Waco", "Texas", 76715)
people = [steve, chris, larry, adam]
people_array = people.map do |person|
person = person.name, person.hobby, person.city, person.state, person.zip
end
Now I just need to turn it into a hash. One issue I am having is, when I'm experimenting with other methods, I can turn it into a hash, but the array is still inside the hash. The expected output is just a nested hash with no arrays inside of it.
# Expected output ... create the following hash from the peeps array:
#
# people_hash = {
# "Steve" => {
# "hobby" => "golf",
# "address" => {
# "city" => "Dallas",
# "state" => "Texas",
# "zip" => 75444
# }
# # etc, etc
Any hints on making sure the hash is a nested hash with no arrays?
This works:
person_hash = Hash[peeps_array.map do |user|
[user[0], Hash['hobby', user[1], 'address', Hash['city', user[2], 'state', user[3], 'zip', user[4]]]]
end]
Basically just use the ruby Hash [] method to convert each of the sub-arrays into an hash
Why not just pass people
?
people.each_with_object({}) do |instance, h|
h[instance.name] = { "hobby" => instance.hobby,
"address" => { "city" => instance.city,
"state" => instance.state,
"zip" => instance.zip } }
end
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