How to create multiple columns per row in CSV with Ruby

Ok, I have a hash that contains several properties. I wanted some properties of this hash to be added to the CSV file.

Here's what I wrote:

    require 'csv'
    require 'curb'
    require 'json'

    arr = []

    CSV.foreach('test.csv') do | row |
        details = []
        details << result['results'][0]['formatted_address']
        result['results'][0]['address_components'].each do | w |
            details << w['short_name']
        end
        arr << details
    end

    CSV.open('test_result.csv', 'w') do | csv |
        arr.each do | e |
            csv << [e]
        end
      end
    end

      

        
        
        
      

    

Everything works fine except that I get each one like this:

["something", "300", "something", "something", "something", "something", "something", "GB", "something"]

Like an array I don't want. I want each element of the array to be in a new column. The problem is I don't know how many elements I will have otherwise, I could have something like this:

CSV.open('test_result.csv', 'w') do | csv |
        arr.each do | e |
            csv << [e[0], e[1], ...]
        end
      end
    end

      

        
        
        
      

    

Any ideas?