Hospital MVC Example

hospital.rb

class Hospital
  attr_reader :patients, :name

  def initialize(name, patients = [])
    @name = name
    @patients = patients
  end

  def find_patient_by_name(name)
    patients.find { |patient| patient.name == name }
  end

  def patient_count
    patients.count
  end
end

hospital_controller.rb

class HospitalController
  def initialize(hospital)
    @hospital = hospital
  end

  def run(command, *options)
    case command
    when "hospital" then show_hospital
    when "patient" then show_patient(options.first)
    end
  end

  private
  attr_reader :hospital

  def show_hospital
    HospitalView.show(hospital)
  end

  def show_patient(search_name)
    patient = hospital.find_patient_by_name(search_name)
    if patient
      PatientView.show(patient)
    else
      printer("Could not find a patient with the name #{search_name}.")
    end
  end
end

hospital_view.rb

module HospitalView
  def self.show(hospital)
    "#{hospital.name}\n#{hospital.patient_count} patients admitted."
  end
end

patient.rb

class Patient
  attr_reader :date_of_birth, :medical_records_number, :name

  def initialize(args = {})
    @date_of_birth = args[:date_of_birth]
    @medical_records_number = args[:medical_records_number]
    @name = args[:name]
  end

  alias_method :mrn, :medical_records_number
  alias_method :dob, :date_of_birth
end

patient_view.rb

module PatientView  
  def self.show(patient)
  	display_albert
  	puts "^"
  	puts "|"
  	puts "|"
  	printer("Medical # | Name | Birthdate")
    printer("#{patient.mrn} - #{patient.name} (DOB: #{format_dob(patient.dob)})")
  end

  private
  def self.format_dob(date)
    date.strftime("%m/%d/%Y")
  end
end

runner.rb

require_relative "patient"
require_relative "patient_view"
require_relative "hospital"
require_relative "hospital_view"
require_relative "hospital_controller"
require_relative "view_helper"
require 'date'

if ARGV.any?
  patients   = [Patient.new(name: "Albert", date_of_birth: Date.new(1879, 3, 14), medical_records_number: "12345")]
  hospital   = Hospital.new("St. Charles Hospital", patients)
  controller = HospitalController.new(hospital)

  puts controller.run(*ARGV)
end

view_helper.rb

def printer(string)
    string.split(//).each do |letter|
      print letter
      sleep(0.02)
    end
    puts ""
end


def display_albert
	string = <<-EOD

	 /  (  (  (  (  (  (  (  (  (  (  (  (\\_
       _/ `. `. `. `. `. `. `. `. `. `. `. `. `.\\_
      /  )  )  )  )  )  )  )  )  )  )  )  )  )  ) \\_
     / .' .' .' .' .' .' .' .' .' .' .' .' .' .' .' \\_
    | (  (  (  (  (  (  (  (  (  (  (  (  (  (  (  (  \\_
    |. `. `. `. `. `. `. `__`__`__`__`. `. `. `. `. `. `\\_
     \\)  )  )  )  )__)__)/           \\_)__)  )  )  )  )  )\\_
      |.' .' .' .'/                       \\.' .' .' .' .' .'\\_
      |  (  (  ( /                         \\ (  (  (  (  (  ( \\
      |`. `. `. |                           \\ `. `. `. `. `. `.\\
      |  )  )  )|                            \\  )  )  )  )  )  )|
      |.' .' .' |                             \\' .' .' .' .' .' |
      |  (  (  (|  ______         _____        |(  (  (  (  (  (|
      |`. `. `. | /______)       (_____\\       | `. `. `. `. `. |
      |  )  )  )|//                    \\\_      \\  )  )  )  )  \/
       \\' .' .' |  _____          _____          |'__' .' .' ./
        |(  (  (| ( [O] )        ( [O] )         |/  \\(  (  ((
        | `. `. |  \\___/          \\___/             \\ |`. `. `\\
         \\_ )  )|          ,                        / |  )  )  \\
           \\ .' .\        |   .                      / .' .' .' \\
            \\_ (  |      (     )                 |\_/ (  (  (  ( )
              \\ `.|       \___/                  |. `. `. `. `__/
               \\__|                              | )  )  ) __/
                  |      _______                 |' .' .__/
                  |    _/////\\\\\\\\\\____          _/.\\____/_____
                  |   ///////\\\\\\\\\\\\\\\        / |.|\\,%\\,%\\,%\\_______
                   \ |///////\\\\\\\\\|\\\     _/  |.|\\%,\\%,\\%,\\%,\\%,\\%,\\____
                    \   \__________/       /   /. |%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\
                   __\\                    /   /. /%,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\
                 _/%\\,\\_               __/   /. /%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\,%
       _________/%\\,%\\,%\\_         ___/    _/. /\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\,
     _/%,\\%,\\%,\\%,\\%,\\%/XX\\_______/      _/. ./,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\%
  __/,%\\,%\\,%\\,%\\,%\\,%/XXXXX\\_        __/. ./%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\,%\\
 /%,\\%,\\%,\\%,\\%,\\%,\\%/XXXXXXXX\\      /. . ./%,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\%,\\

 EOD
 puts string
end