在onBefore钩子或类似钩子中更改返回的集合

if (Meteor.isServer) {

	import { publishComposite } from 'meteor/reywood:publish-composite';

	publishComposite('invoicesWithCompanyDetails', function(userId, startingDate,endingDate) {
		return {
			find() {
				// Find purchase history for userId and the two dates that were entered. Note arguments for callback function
				// being used in query.
				return PurchaseHistory.find({Id:userId,transactionDate:{$gte:new Date(decodeURIComponent(startingDate)),
					  $lt:new Date(decodeURIComponent(endingDate))}});
			},
			children: [
				{
			
					find() {
						return CompanySharedNumbers.find(
							{ _id:"firstOccurrence" },
							{ fields: { companyName: 1, companyAddress: 1 } }
						);
					}
				}
			]
		}
	});
}

Router.route('/store/invoices/:_username/:startingDate/:endingDate', { //:_startingDate/:_endingDate
	name: 'invoices',
	template: 'invoices',
	onBeforeAction: function()
	{
		...
	},
	waitOn: function() {
		var startingDate = this.params.startingDate;
		var endingDate = this.params.endingDate;
		return [Meteor.subscribe('systemInfo'),Meteor.subscribe('testingOn'),Meteor.subscribe('invoicesWithCompanyDetails',startingDate,endingDate)];
	} 
});

Pages = new Meteor.Pagination(PurchaseHistory, {
	itemTemplate: "invoice",
	availableSettings: {filters: true},
	filters: {},
	route: "/store/invoices/:_username/:startingDate/:endingDate/",
	router: "iron-router",
	routerTemplate: "invoices",
	routerLayout: "main",
	sort: {
		transactionDate: 1
	},
	perPage: 1,
	templateName: "invoices",
	homeRoute:"home"
});