From https://once.com/writebook

app/models/session.rb

@@ -0,0 +1,19 @@
+class Session < ApplicationRecord
+  ACTIVITY_REFRESH_RATE = 1.hour
+
+  has_secure_token
+
+  belongs_to :user
+
+  before_create { self.last_active_at ||= Time.now }
+
+  def self.start!(user_agent:, ip_address:)
+    create! user_agent: user_agent, ip_address: ip_address
+  end
+
+  def resume(user_agent:, ip_address:)
+    if last_active_at.before?(ACTIVITY_REFRESH_RATE.ago)
+      update! user_agent: user_agent, ip_address: ip_address, last_active_at: Time.now
+    end
+  end
+end