current implementation of deluxe fizzbuzz

app.rb

class App
  def initialize
    @output = []
  end

  def fizz_buzz(number)
    @number = number
    builder
    result = { true => @output.join(" "), false => number }
    result[(output.length > 0)]
  end

  private

  attr_reader :output, :number, :truth, :array

  FIZZ = 3
  BUZZ = 5
  
  def builder
    @output.push("fizz") if fizzable
    @output.push("buzz") if buzzable
    @output.push("deluxe") if deluxeable
    @output.insert(-2,"fake") if deluxeable && number.odd?
  end

  def fizzable
    (number % FIZZ) == 0 || number_check(FIZZ) 
  end

  def buzzable
    (number % BUZZ) == 0 || number_check(BUZZ) 
  end

  def deluxeable
    (number_check(FIZZ) && number % FIZZ == 0) || (number_check(BUZZ) && number % BUZZ == 0 )
  end

  def number_check(test)
    @array = "#{number}".split(//)
    @truth = []
    iterate_array(test)
    check = { true => true, false => false}
    check[truth.include?(true)]
  end

  def iterate_array(test)
    array.each do |x|
      @truth.push(true) if x.to_i == test
    end
  end
end