Fix second_level_cache method not found error. (#1440)

app/models/application_record.rb

@@ -3,10 +3,12 @@ class ApplicationRecord < ActiveRecord::Base
 
   include RedisCountable
   include Countable
+  include FakeSecondCache
 
   scope :recent, -> { order(id: :desc) }
   scope :exclude_ids, ->(ids) { where.not(id: ids.map(&:to_i)) }
   scope :by_week, -> { where("created_at > ?", 7.days.ago.utc) }
 
   delegate :url_helpers, to: "Rails.application.routes"
+
 end

app/models/concerns/fake_second_cache.rb

@@ -0,0 +1,9 @@
+# Add a fake second_level_cache method to the model for compatibility with the Homeland plugins.
+module FakeSecondCache
+  extend ActiveSupport::Concern
+
+  class_methods do
+    def second_level_cache(args)
+    end
+  end
+end

test/support/model.rb

@@ -1,4 +1,5 @@
 class CommentablePage < ApplicationRecord
+  second_level_cache expires_in: 2.weeks
 end
 
 class Monkey < ApplicationRecord