Recalculate heading winner investments when a winner is flagged as incompatible

app/models/budget/investment.rb

@@ -64,6 +64,7 @@ class Budget
     scope :for_render, -> { includes(:heading) }
 
     before_save :calculate_confidence_score
+    after_save :recalculate_heading_winners if :incompatible_changed?
     before_validation :set_responsible_name
     before_validation :set_denormalized_ids
 
@@ -201,6 +202,10 @@ class Budget
       self.confidence_score = ScoreCalculator.confidence_score(total_votes, total_votes)
     end
 
+    def recalculate_heading_winners
+      Budget::Result.new(budget, heading).calculate_winners if incompatible_changed? && winner? && incompatible?
+    end
+
     def set_responsible_name
       self.responsible_name = author.try(:document_number) if author.try(:document_number).present?
     end