Class: Assigner

Inherits:
Object
  • Object
show all
Defined in:
lib/assigner.rb

Defined Under Namespace

Modules: Assignable

Class Method Summary collapse

Class Method Details

.assign_each_other!(items, &block) ⇒ Object 



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# File 'lib/assigner.rb', line 3

def self.assign_each_other!(items, &block)
  
  # Wrap Items to add assignation behavior
  wrap(items, &block)

  # Random assignation between items
  items_copy = items.dup
  items.each do |item|
    item.assignation = items_copy.delete_at(rand(items_copy.size))
  end

  # Switch assignation if it's not allowed
  items.each do |item|
     unless item.assignation.can_be_assigned_to? item
       candidates = items.select {|i| i.assignation.can_be_assigned_to?(item) && item.assignation.can_be_assigned_to?(i)}
       raise if candidates.empty?
       other = candidates[rand(candidates.size)]
       temp = item.assignation
       item.assignation = other.assignation
       other.assignation = temp
       finished = false
     end
  end
end