file.rb

require "ostruct"

# Actual value obtained from elsewhere, must 
# be in this format up until now.
required_records = {"1" => { "name" => "Adam" }, "2" => { "name" => "John" }}

# Loop through each required record and
# assemble each key-value into the open structure output.
output = Array.new

required_records.each do |id, record|
  output += OpenStruct.new({ "id" => id.to_i }.merge(record))
end

# Real output => can't convert open struct to array

# Desired output => [#<OpenStruct id=1, name="Adam">, #<OpenStruct id=2, name="John">]