# File lib/cancan/model_adapters/active_record_adapter.rb, line 99
      def database_records
        if override_scope
          @model_class.scoped.merge(override_scope)
        elsif @model_class.respond_to?(:where) && @model_class.respond_to?(:joins)
          mergeable_conditions = @rules.select {|rule| rule.unmergeable? }.blank?
          if mergeable_conditions
            @model_class.where(conditions).joins(joins)
          else
            @model_class.where(*(@rules.map(&:conditions))).joins(joins)
          end
        else
          @model_class.scoped(:conditions => conditions, :joins => joins)
        end
      end