Using guard clause in ruby on rails for multiple independent if clause

Question

How to use the guard clause in the following scenario? The msg is capturing info in 2 independent if-clauses.

def edible?(food_object)

    edible_type = ['fruit','vegetable','nuts']
    food_list  = ['apple','banana','orange','olive','cashew','spinach']

    food = food_object.food
    type = food_object.type
   
   msg = ''
   if edible_type.include?(type)
     msg += 'Edible : '
   end

   if food_list.include?(food)
     msg += 'Great Choice !'
   end

end

Answer 1

Like this:

def edible?(food_object)
  edible_type = ['fruit','vegetable','nuts']
  food_list  = ['apple','banana','orange','olive','cashew','spinach']
  food = food_object.food
  type = food_object.type
  
  msg = ''
  msg += 'Edible : ' if edible_type.include?(type)
  msg += 'Great Choice !' if food_list.include?(food)
end

or to return as early as possible

def edible?(food_object)
  edible_type = ['fruit','vegetable','nuts']
  food_list  = ['apple','banana','orange','olive','cashew','spinach']
  food = food_list.include?(food)
  type = edible_type.include?(type)
  msg = ''
  return msg unless food || edible
  msg += 'Edible : ' if type
  msg += 'Great Choice !' if food
end

Side note: Beware that the commonly accepted practice is for the ruby method names to end with ? when they return boolean value.