fix query utils propagation when used in other modules (validations, "inherited" query utils, ...)

lib/report/query_utils.rb

@@ -4,6 +4,17 @@ module Report::QueryUtils
   delegate :quoted_false, :quoted_true, :to => "ActiveRecord::Base.connection"
   attr_writer :engine
 
+  module PropagationHook
+    def append_features(base)
+      ancestors[1..-1].reverse_each { |m| base.send(:include, m) }
+      base.extend PropagationHook
+      base.extend self
+      super
+    end
+  end
+
+  extend PropagationHook
+
   ##
   # Subclass of Report to be used for constant lookup and such.
   # It is considered public API to override this method i.e. in Tests.

lib/report/validation.rb

@@ -14,7 +14,7 @@ module Report::Validation
   def register_validation(val_method)
     const_name = val_method.to_s.camelize
     begin
-      val_module = Report::Validation.const_get const_name
+      val_module = engine::Validation.const_get const_name
       singleton_class.send(:include, val_module)
       val_method = "validate_" + val_method.to_s.pluralize
       if method(val_method)