add option to parse input Dates as UTC

Author: spollack

lib/defaults.js

@@ -40,8 +40,10 @@ var defaults = module.exports = {
 
  ssl: false,
 
- application_name : undefined,
- fallback_application_name: undefined
+ application_name: undefined,
+ fallback_application_name: undefined,
+
+ parseInputDatesAsUTC: false
 };
 
 //parse int8 so you can get your count values as actual numbers

lib/utils.js

@@ -1,3 +1,4 @@
+var defaults = require('./defaults');
 
 // convert a JS array to a postgres array literal
 // uses comma separator so won't work for types like box that use
@@ -32,7 +33,11 @@ var prepareValue = function(val, seen) {
  return val;
  }
  if(val instanceof Date) {
- return dateToString(val);
+ if(defaults.parseInputDatesAsUTC) {
+ return dateToStringUTC(val);
+ } else {
+ return dateToString(val);
+ }
  }
  if(Array.isArray(val)) {
  return arrayString(val);
@@ -59,13 +64,14 @@ function prepareObject(val, seen) {
  return JSON.stringify(val);
 }
 
+function pad(number, digits) {
+ number = "" +number;
+ while(number.length < digits)
+ number = "0" + number;
+ return number;
+}
+
 function dateToString(date) {
- function pad(number, digits) {
- number = ""+number;
- while(number.length < digits)
- number = "0"+number;
- return number;
- }
 
  var offset = -date.getTimezoneOffset();
  var ret = pad(date.getFullYear(), 4) + '-' +
@@ -86,6 +92,19 @@ function dateToString(date) {
  return ret + pad(Math.floor(offset/60), 2) + ":" + pad(offset%60, 2);
 }
 
+function dateToStringUTC(date) {
+ 
+ var ret = pad(date.getUTCFullYear(), 4) + '-' +
+ pad(date.getUTCMonth() + 1, 2) + '-' +
+ pad(date.getUTCDate(), 2) + 'T' +
+ pad(date.getUTCHours(), 2) + ':' +
+ pad(date.getUTCMinutes(), 2) + ':' +
+ pad(date.getUTCSeconds(), 2) + '.' +
+ pad(date.getUTCMilliseconds(), 3);
+ 
+ return ret + "+00:00";
+}
+
 function normalizeQueryConfig (config, values, callback) {
  //can take in strings or config objects
  config = (typeof(config) == 'string') ? { text: config } : config;

test/unit/utils-tests.js

@@ -65,6 +65,17 @@ test('prepareValues: date prepared properly', function() {
  helper.resetTimezoneOffset();
 });
 
+test('prepareValues: date prepared properly as UTC', function() {
+ defaults.parseInputDatesAsUTC = true;
+
+ // make a date in the local timezone that represents a specific UTC point in time
+ var date = new Date(Date.UTC(2014, 1, 1, 11, 11, 1, 7));
+ var out = utils.prepareValue(date);
+ assert.strictEqual(out, "2014-02-01T11:11:01.007+00:00");
+
+ defaults.parseInputDatesAsUTC = false;
+});
+
 test('prepareValues: undefined prepared properly', function() {
  var out = utils.prepareValue(void 0);
  assert.strictEqual(out, null);