Move event creation to service.

app/controllers/groups/group_members_controller.rb

@@ -25,12 +25,7 @@ class Groups::GroupMembersController < ApplicationController
         target_type: "User",
         target_details: @member.user.name,
       }
-      SecurityEvent.create(
-        author_id: current_user.id,
-        entity_id: @group.id,
-        entity_type: "Group",
-        details: details
-      )
+      AuditEventService.new(current_user, @group, details).security_event
     end
   end
 

app/controllers/projects/team_members_controller.rb

@@ -39,12 +39,7 @@ class Projects::TeamMembersController < Projects::ApplicationController
         target_type: "User",
         target_details: @user_project_relation.user.name,
       }
-      SecurityEvent.create(
-        author_id: current_user.id,
-        entity_id: @project.id,
-        entity_type: "Project",
-        details: details
-      )
+      AuditEventService.new(current_user, @project, details).security_event
     end
 
     unless @user_project_relation.valid?

app/services/audit_event_service.rb

+class AuditEventService
+
+  def initialize(author, entity, details = {})
+    @author, @entity, @details = author, entity, details
+  end
+
+  def security_event
+    SecurityEvent.create(
+      author_id: @author.id,
+      entity_id: @entity.id,
+      entity_type: @entity.class.name,
+      details: @details
+    )
+  end
+end