Class: Label

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/alu0101042305/label.rb

Constant Summary collapse

@@ir = 
{:kj => 8400, :kcal => 2000, :grasas => 70, :grasass => 20,
:hc => 260, :azucar => 90, :protei => 50, :sal => 6}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(nombre, porcion, grasas, grasass, hc, azucar, protei, sal) ⇒ Label

Returns a new instance of Label.



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# File 'lib/alu0101042305/label.rb', line 10

def initialize(nombre, porcion, grasas, grasass, hc, azucar, protei, sal)
  @nombre, @porcion, @grasas, @grasass, @hc, @azucar, @protei, @sal =
  nombre, porcion, grasas, grasass, hc, azucar, protei, sal
end

Instance Attribute Details

#azucar ⇒ Object (readonly)

Returns the value of attribute azucar.



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# File 'lib/alu0101042305/label.rb', line 5

def azucar
  @azucar
end

#grasas ⇒ Object (readonly)

Returns the value of attribute grasas.



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# File 'lib/alu0101042305/label.rb', line 5

def grasas
  @grasas
end

#grasass ⇒ Object (readonly)

Returns the value of attribute grasass.



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# File 'lib/alu0101042305/label.rb', line 5

def grasass
  @grasass
end

#hc ⇒ Object (readonly)

Returns the value of attribute hc.



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# File 'lib/alu0101042305/label.rb', line 5

def hc
  @hc
end

#nombre ⇒ Object (readonly)

Returns the value of attribute nombre.



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# File 'lib/alu0101042305/label.rb', line 5

def nombre
  @nombre
end

#porcion ⇒ Object (readonly)

Returns the value of attribute porcion.



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# File 'lib/alu0101042305/label.rb', line 5

def porcion
  @porcion
end

#protei ⇒ Object (readonly)

Returns the value of attribute protei.



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# File 'lib/alu0101042305/label.rb', line 5

def protei
  @protei
end

#sal ⇒ Object (readonly)

Returns the value of attribute sal.



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# File 'lib/alu0101042305/label.rb', line 5

def sal
  @sal
end

Instance Method Details

#+(label) ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 23

def + (label)
  self.kcal + label.kcal
end

#<=>(label) ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 43

def <=>(label)
  return -1 if self.sal < label.sal
  return 1 if self.sal > label.sal
  return self.nombre <=> label.nombre
end

#coerce(arg) ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 27

def coerce(arg)
  [arg,self.kcal]
end

#ir(method) ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 39

def ir(method)
  ((send(method)*100)/@@ir[method]).round(2)
end

#kcal ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 19

def kcal
  grasas * 9 + hc * 4 + protei * 4 + sal * 6
end

#kj ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 15

def kj
  grasas * 37 + hc * 17 + protei * 17 + sal * 25
end

#to_s ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 49

def to_s
  str = String.new
  str << @nombre << "\n"
  str << "\t\t\t Por 100g\t IR (100g)\t Por #{@porcion}g\t IR(#{@porcion}g)\n"
  str << "Valor energético\t #{kj}kJ/#{kcal}kcal\t #{ir(:kcal)}%\t #{toX(:kj)}kJ/#{toX(:kcal)}kcal\t #{toX(:ir,:kcal)}%\n"
  str <<"Grasas\t\t\t #{@grasas}g\t\t #{ir(:grasas)}%\t\t  #{toX(:grasas)}g\t\t  #{toX(:ir,:grasas)}%\n"
  str <<"  saturadas:\t\t #{@grasass}g\t\t #{ir(:grasass)}%\t\t  #{toX(:grasass)}g\t\t  #{toX(:ir,:grasass)}%\n"
  str <<"Hidratos de carbono\t #{@hc}g\t\t #{ir(:hc)}%\t\t  #{toX(:hc)}g\t\t  #{toX(:ir,:hc)}%\n"
  str <<"  azúcares:\t\t #{@azucar}g\t\t #{ir(:azucar)}%\t\t  #{toX(:azucar)}g\t\t  #{toX(:ir,:azucar)}%\n"
  str <<"Proteínas\t\t #{@protei}g\t\t #{ir(:protei)}%\t\t  #{toX(:protei)}g\t\t  #{toX(:ir,:protei)}%\n"
  str <<"Sal\t\t\t #{@sal}g\t\t #{ir(:sal)}%\t\t  #{toX(:sal)}g\t\t  #{toX(:ir,:sal)}%\n"
end

#toX(method, arg = nil) ⇒ Object 



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# File 'lib/alu0101042305/label.rb', line 31

def toX(method, arg = nil)
  if arg == nil
    ((send(method)*@porcion)/100).round(2)
  else
    ((send(method, arg)*@porcion)/100).round(2)
  end
end