Code snippet 5 for blog post http://blog.geomusings.com/2014/02/18/a-little-deeper-with-node-and-postgis/

snippet5.js

exports.getFeatureResult = function(result, spatialcol) {
      var props = new Object;
      var crsobj = {
          "type" : "name",
          "properties" : {
              "name" : "urn:ogc:def:crs:EPSG:6.3:4326"
          }
      };
      //builds feature properties from database columns
      for (var k in result) {
          if (result.hasOwnProperty(k)) {
              var nm = "" + k;
              if ((nm != "geojson") && nm != spatialcol) {
                  props[nm] = result[k];
              }
          }
      }

      return {
          type : "Feature",
          crs : crsobj,
          geometry : JSON.parse(result.geojson),
          properties : props
      };
  };