af_psql_trgm: don't load dialog via http

plugins/af_psql_trgm/init.js

@@ -1,15 +1,18 @@
-/* global dijit, Plugins, __ */
+/* global dijit, dojo, Plugins, xhrPost, __ */
 
 Plugins.Psql_Trgm = {
 	showRelated: function (id) {
-		const query = "backend.php?op=pluginhandler&plugin=af_psql_trgm&method=showrelated&param=" + encodeURIComponent(id);
-
 		const dialog = new dijit.Dialog({
 			title: __("Related articles"),
-			execute: function () {
+			content: __("Loading, please wait...")
-				//
+		});
-			},
+
-			href: query,
+		const tmph = dojo.connect(dialog, "onShow", null, function (/* e */) {
+			dojo.disconnect(tmph);
+
+			xhrPost("backend.php", {op: 'pluginhandler', plugin: 'af_psql_trgm', method: 'showrelated', id: id}, (transport) => {
+				dialog.attr('content', transport.responseText);
+			});
 		});
 
 		dialog.show();

plugins/af_psql_trgm/init.php

@@ -46,7 +46,7 @@ class Af_Psql_Trgm extends Plugin {
 	}
 
 	function showrelated() {
-		$id = (int) $_REQUEST['param'];
+		$id = (int) $_REQUEST['id'];
 		$owner_uid = $_SESSION["uid"];
 
 		$sth = $this->pdo->prepare("SELECT title FROM ttrss_entries, ttrss_user_entries