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HASH

driver =
{
    :name => "Happy",
    :id_number => "12345"
}

my_hash =
{
:name => "Car",
:color => "red",
:numwheels => 4,
driver: driver # if colon is on the right hand side, it passes driver value
}

puts my_hash[:name],
puts my_hash[:color],
puts my_hash[num_wheels => 4
puts my_hash[:driver][:name]  # trying to get key name from my_hash, from driver

my_hash.each do |item|
    puts item

my_hase.each_pair do |key, value|
    puts "#{key}; #{value}"

Model - data
View - interface
Controller - flow of data/dictates where to go

User interacts with framework. Whatever you put in VIEW doesnt say where the user has to go, controller does that.

First entry point should be the controller component.

User will request
    a) url
    b) data/hash

RESPONSE