parse_cloud_multiple_object_query.js

/*
 *  Parse cloud function to execute query from multiple tables 
 *  Useful in number of scenarios - activity streams, exporting data out etc...
 * 
 */
 
 Parse.Cloud.define("aggregateQueryFunction", function(request, response){



  // I have 5 ParseObjects - Diaper, Sleep, Milestone, Growth, Feed.
	var diapers = request.params.diapers!==undefined?request.params.diapers:"No";
	var sleep = request.params.sleep!==undefined?request.params.sleep:"No";
	var milestone = request.params.milestone!==undefined?request.params.milestone:"No"
	var growth = request.params.growth!=undefined?request.params.growth:"No"
	var feed  = request.params.feed!=undefined?request.params.feed:"No"




  // add the promises to an promise array
	var funcs = [];
	if (diapers=="yes") funcs.push(diaperQuery.find())
	if (sleep=="yes") funcs.push(sleepQuery.find())
	if (milestone=="yes") funcs.push(milestoneQuery.find())
	if (growth=="yes") funcs.push(growthQuery.find())
	if (feed=="yes") funcs.push(feedQuery.find())

  
	
  //kinda like Promise.all()
  //Parse Documentation indicates the use of Parse.Promise as follows
  // Parse.Promise.when(funcs).then(function(r1,r2,r3){}) but in most scenarios you may not know
  // how many funcs are there in the func array.
  Parse.Promise.when(funcs).then(function(){
		response.success(arguments);
	}, function(error){
		response.error(error);
	})


	


	

})