Getting a value from an array of hashes in Ruby - ruby

Question

I have an array:
address => [{"data"=>{"zip"=>"60628", "state"=>"IL", "city"=>"chicago", "street"=>"123 Main St. Apt 2"}, "primary"=>true}]
I want to show each piece in the right format on my view like:
123 Main St. Apt 2
Chicago, IL 60628
I am having trouble getting the logic correct to show this.
Where should this logic go, as a method in my model or in the actual view?
I tried:
<% #applicant.address.map{|x| x[:data]}.each do |address| %>
<%= address.street %><br><%= address.city %>, <%= address.state %> <%= address.zip %> <br>
<% end %>
but got:
=> [{"zip"=>"60628", "state"=>"IL", "city"=>"chicago", "street"=>"123 main st Apt 2"}]

Answer 1

The map gives you a new array and if you use hashes you need to access the values with the hash[:key] or hash["key"] operator, try this:
<% #applicant.address.each do |address_hash| %>
<% address = address_hash["data"] %>
<%= address["street"] %><br><%= address["city"] %>, <%= address["state"] %> <%= address["zip"] %> <br>
<% end %>
But if I were you , I'd put the data in an array of structs, it's more readable.
In your model or helper:
address = Struct.new(:street, :city, :state, :zip)
address.street = ..
...
#addresses << address
etc
In your view:
<% #addresses.each do |address| %>
<%= address.street %><br><%= address.city %>, <%= address.state %> <%= address.zip %> <br>
<% end %>

Answer 2

For your first question something like this should suffice:
#!/usr/bin/env ruby
require 'ostruct'
address = [
{
'data' => {
'zip' => '60628',
'state' => 'IL',
'city' => 'chicago',
'street' =>'123 Main St. Apt 2'
},
'primary' => true
}
]
class AddressPresenter
def initialize(address)
#address = OpenStruct.new(address)
end
def to_s
"#{#address.street} \n#{#address.city} #{#address.state} #{#address.zip}"
end
end
address.each do |a|
puts AddressPresenter.new(a['data'])
end
Now, for the second question, I would implement a Presenter class whose only goal is to "present" the data in whatever format you need in the view, this allows you to keep your views with 0 presentation logic. So in this case the class AddressPresenter could be reworked to return in the to_s the right HTML you need in your view. And you would do something like:
<% #applicant.address.each do |address| %>
<%= AddressPresenter.new(address['data']).to_s %>
<% end %>
By having a separated presenter class, you get the following benefits:
Your models don't worry about how to present/render stuff because that's not their job
You can test this presenter to confirm it returns whatever you're expecting in the view
Your views don't contain any complicated logic