Allow scheduling from after_commit hooks

config/initializers/forbid_sidekiq_in_transactions.rb

 module Sidekiq
   module Worker
+    mattr_accessor :inside_after_commit
+    self.inside_after_commit = false
+
     module ClassMethods
       module NoSchedulingFromTransactions
         NESTING = ::Rails.env.test? ? 1 : 0
 
         %i(perform_async perform_at perform_in).each do |name|
           define_method(name) do |*args|
-            if ActiveRecord::Base.connection.open_transactions > NESTING
+            return super(*args) if Sidekiq::Worker.inside_after_commit
+            return super(*args) unless ActiveRecord::Base.connection.open_transactions > NESTING
+
             raise <<-MSG.strip_heredoc
-                `#{self}.#{name}` cannot be called inside a transaction as this can lead to race
-                conditions when the worker runs before the transaction is committed and tries to
-                access a model that has not been saved yet.
+              `#{self}.#{name}` cannot be called inside a transaction as this can lead to
+              race conditions when the worker runs before the transaction is committed and
+              tries to access a model that has not been saved yet.
 
-                Schedule the worker from inside a `run_after_commit` block instead.
+              Use an `after_commit` hook, or include `AfterCommitQueue` and use a `run_after_commit` block instead.
             MSG
           end
-
-            super(*args)
-          end
         end
       end
 
@@ -25,3 +27,19 @@ module Sidekiq
     end
   end
 end
+
+module ActiveRecord
+  class Base
+    module InsideAfterCommit
+      def committed!(*)
+        inside_after_commit = Sidekiq::Worker.inside_after_commit
+        Sidekiq::Worker.inside_after_commit = true
+        super
+      ensure
+        Sidekiq::Worker.inside_after_commit = inside_after_commit
+      end
+    end
+
+    prepend InsideAfterCommit
+  end
+end