erp/erpnext/regional/report/irs_1099/irs_1099.js

// Copyright (c) 2018, Frappe Technologies Pvt. Ltd. and Contributors
// License: GNU General Public License v3. See license.txt

frappe.query_reports["IRS 1099"] = {
	filters: [
		{
			fieldname: "company",
			label: __("Company"),
			fieldtype: "Link",
			options: "Company",
			default: frappe.defaults.get_user_default("Company"),
			reqd: 1,
			width: 80,
		},
		{
			fieldname: "fiscal_year",
			label: __("Fiscal Year"),
			fieldtype: "Link",
			options: "Fiscal Year",
			default: erpnext.utils.get_fiscal_year(frappe.datetime.get_today()),
			reqd: 1,
			width: 80,
		},
		{
			fieldname: "supplier_group",
			label: __("Supplier Group"),
			fieldtype: "Link",
			options: "Supplier Group",
			default: "",
			reqd: 0,
			width: 80,
		},
	],

	onload: function (query_report) {
		query_report.page.add_inner_button(__("Print IRS 1099 Forms"), () => {
			build_1099_print(query_report);
		});
	},
};

function build_1099_print(query_report) {
	let filters = JSON.stringify(query_report.get_values());
	let w = window.open(
		"/api/method/erpnext.regional.report.irs_1099.irs_1099.irs_1099_print?" +
			"&filters=" +
			encodeURIComponent(filters)
	);
	// w.print();
}