add function to update edutional stages in learning objects put

app/models/concerns/stageable.rb

@@ -45,4 +45,11 @@ module Stageable
       StageRelation.where(educational_stage: educational_stage, stageable: self).destroy_all
     end
   end
+
+  def update_educational_stages(ids: [])
+    stageable = self
+    old_ids = stageable.educational_stages.map {|es| es.id }
+    add_educational_stages(ids: ids - old_ids)
+    remove_educational_stages(ids: old_ids - ids)
+  end
 end