Need to do this in one transaction

app/models/card.rb

@@ -12,7 +12,7 @@ class Card < ApplicationRecord
   has_rich_text :description
 
   before_save :set_default_title, if: :published?
-  after_save :grant_access_to_assignees, if: :saved_change_to_collection_id?
+  after_save :handle_collection_change, if: :saved_change_to_collection_id?
 
   scope :reverse_chronologically, -> { order created_at: :desc, id: :desc }
   scope :chronologically, -> { order created_at: :asc, id: :asc }
@@ -41,8 +41,20 @@ class Card < ApplicationRecord
       self.title = "Untitled" if title.blank?
     end
 
+    def handle_collection_change
+      transaction do
+        old_collection = Collection.find_by(id: collection_id_before_last_save)
+        if old_collection.present?
+          track_event "collection_changed", particulars: { 
+            old_collection: old_collection.name,
+            new_collection: collection.name
+          }
+        end
+        grant_access_to_assignees unless collection.all_access?
+      end
+    end
+
     def grant_access_to_assignees
-      return if collection.all_access?
       collection.accesses.grant_to(assignees)
     end
 end

app/models/card/eventable.rb

@@ -7,7 +7,6 @@ module Card::Eventable
     before_create { self.last_active_at = Time.current }
 
     after_save :track_title_change, if: :saved_change_to_title?
-    after_save :track_collection_change, if: :saved_change_to_collection_id?
   end
 
   def event_was_created(event)
@@ -28,17 +27,6 @@ module Card::Eventable
       end
     end
 
-    def track_collection_change
-      old_collection = Collection.find_by(id: collection_id_before_last_save)
-      
-      if old_collection.present?
-        track_event "collection_changed", particulars: { 
-          old_collection: old_collection.name,
-          new_collection: collection.name
-        }
-      end
-    end
-
     def create_system_comment_for(event)
       SystemCommenter.new(self, event).comment
     end