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def self.count_vhs_by_rentals
  Rental.all.each_with_object({}) do |rental, vhs_hash| 
    vhs_hash[rental.vhs].nil? ? vhs_hash[rental.vhs] = 1 : vhs_hash[rental.vhs] += 1 
  end
end 
#=> {<Vhs:0x00007f8d5e2bf0f0 id: 17, serial_number: "MAX-luqovgdk8e7tl", movie_id: 9 => 1,
 #<Vhs:0x00007f8d4f81a4a0 id: 29, serial_number: "BABA-t6k24krzqclts", movie_id: 13 =>2,
 #<Vhs:0x00007f8d4f854538 id: 11, serial_number: "BABA-begvxe7ai0rc6", movie_id: 13 =>3}

def self.count_vhs_by_client

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“hello”.capitalize #=> “Hello”

“hello”.send(“capitalize”) #=> “Hello”

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def self.count_vhs_rentals_by(attribute)
  Rental.all.each_with_object({}) do |rental, vhs_hash| 
    vhs_hash[rental.send(“#{attribute}”)].nil? ? vhs_hash[rental.“#{attribute}”] = 1 : vhs_hash[rental.“#{attribute}”] += 1 
  end
end

Vhs.count_vhs_rentals_by(“vhs”) #=>
#{<Vhs:0x00007f8d5e2bf0f0 id: 17, serial_number: "MAX-luqovgdk8e7tl", movie_id: 9 => 1,
 #<Vhs:0x00007f8d4f81a4a0 id: 29, serial_number: "BABA-t6k24krzqclts", movie_id: 13 =>2,
 #<Vhs:0x00007f8d4f854538 id: 11, serial_number: "BABA-begvxe7ai0rc6", movie_id: 13 =>3}

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module GenericHelpers
  def make_hash_by_attribute(array, attribute)
    array.each_with_object({}) do |array_item, new_hash|
      new_hash[array_item.send("#{attribute}")].nil? ? new_hash[array_item.send("#{attribute}")] = 1 : new_hash[array_item.send("#{attribute}")] += 1
    end
  end
end

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class Vhs
  include GenericHelpers
  extend GenericHelpers
	
  def self.count_vhs_by_rentals
    make_hash_by_attribute(Rental.all, "vhs")
  end
  
  def self.count_vhs_by_client
    make_hash_by_attribute(Rental.all, "client")

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class Client
  include GenericHelpers
  extend GenericHelpers
	
  def self.count_clients_by_age
     make_hash_by_attribute(Client.all, "age")
  end
end

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Rental.group(:vhs).count #=>

#{<Vhs:0x00007f8d5e2bf0f0 id: 17, serial_number: "MAX-luqovgdk8e7tl", movie_id: 9 => 1,
 #<Vhs:0x00007f8d4f81a4a0 id: 29, serial_number: "BABA-t6k24krzqclts", movie_id: 13 =>2,
 #<Vhs:0x00007f8d4f854538 id: 11, serial_number: "BABA-begvxe7ai0rc6", movie_id: 13 =>3}

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require 'twilio-ruby'

account_sid = 'ACcd207c4be71151a3f50ef05c79e865d5'
auth_token = 'yyyyyyyyyyyyyyyyyyyyyyyyy'
client = Twilio::REST::Client.new(account_sid, auth_token)

from = '+15551234567' # Your Twilio number
to = '+15555555555' # The mobile number the text will be sent to

client.messages.create(

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require 'dotenv/load' #This ruby gem will is what we will be using to secure our Twilio credentials
require 'twilio-ruby'

module TwilioControls

  # To set up environmental variables, see http://twil.io/secure
  @@account_sid = ENV['TWILIO_ACCOUNT_SID'] #This is used in conjuction with the 'dotenv/load' gem
  @@auth_token = ENV['TWILIO_AUTH_TOKEN'] #This is used in conjuction with the 'dotenv/load' gem

  @@client = Twilio::REST::Client.new(@@account_sid, @@auth_token)

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export TWILIO_ACCOUNT_SID='AC###################################'
export TWILIO_AUTH_TOKEN='################################'

#your account_sid and auth_token can be found on your Twilio console at twilio.com/console