build_scope

# File activerecord/lib/active_record/associations/preloader/association.rb, line 119
        def build_scope
          scope = klass.unscoped

          values = reflection_scope.values
          preload_values = preload_scope.values

          scope.where_clause = reflection_scope.where_clause + preload_scope.where_clause
          scope.references_values = Array(values[:references]) + Array(preload_values[:references])

          if preload_values[:select] || values[:select]
            scope._select!(preload_values[:select] || values[:select])
          end
          scope.includes! preload_values[:includes] || values[:includes]
          if preload_scope.joins_values.any?
            scope.joins!(preload_scope.joins_values)
          else
            scope.joins!(reflection_scope.joins_values)
          end

          if order_values = preload_values[:order] || values[:order]
            scope.order!(order_values)
          end

          if preload_values[:reordering] || values[:reordering]
            scope.reordering_value = true
          end

          if preload_values[:readonly] || values[:readonly]
            scope.readonly!
          end

          if options[:as]
            scope.where!(klass.table_name => { reflection.type => model.base_class.sti_name })
          end

          scope.unscope_values = Array(values[:unscope]) + Array(preload_values[:unscope])
          klass.default_scoped.merge(scope)
        end