Fix #5793

Use a custom header instead

public/src/ajaxify.js

@@ -293,11 +293,21 @@ $(document).ready(function () {
 			headers: {
 				'X-Return-To': app.previousUrl,
 			},
-			success: function (data) {
+			success: function (data, textStatus, xhr) {
 				if (!data) {
 					return;
 				}
 
+				if (xhr.getResponseHeader('X-Redirect')) {
+					return callback({
+						data: {
+							status: 302,
+							responseJSON: data,
+						},
+						textStatus: 'error',
+					});
+				}
+
 				ajaxify.data = data;
 				data.config = config;
 

src/controllers/errors.js

@@ -45,7 +45,7 @@ exports.handleErrors = function (err, req, res, next) { // eslint-disable-line n
 
 	var status = parseInt(err.status, 10);
 	if ((status === 302 || status === 308) && err.path) {
-		return res.locals.isAPI ? res.status(status).json(err.path) : res.redirect(err.path);
+		return res.locals.isAPI ? res.set('X-Redirect', err.path).status(200).json(err.path) : res.redirect(err.path);
 	}
 
 	winston.error(req.path + '\n', err.stack);

src/controllers/helpers.js

@@ -53,7 +53,7 @@ helpers.notAllowed = function (req, res, error) {
 
 helpers.redirect = function (res, url) {
 	if (res.locals.isAPI) {
-		res.status(308).json(url);
+		res.set('X-Redirect', url).status(200).json(url);
 	} else {
 		res.redirect(nconf.get('relative_path') + encodeURI(url));
 	}