adde expose methods back

used by plugins

src/middleware/index.js

@@ -112,6 +112,28 @@ middleware.privateTagListing = function(req, res, next) {
 	}
 };
 
+middleware.exposeGroupName = function(req, res, next) {
+	expose('groupName', groups.getGroupNameByGroupSlug, 'slug', req, res, next);
+};
+
+middleware.exposeUid = function(req, res, next) {
+	expose('uid', user.getUidByUserslug, 'userslug', req, res, next);
+};
+
+function expose(exposedField, method, field, req, res, next) {
+	if (!req.params.hasOwnProperty(field)) {
+		return next();
+	}
+	method(req.params[field], function(err, id) {
+		if (err) {
+			return next(err);
+		}
+
+		res.locals[exposedField] = id;
+		next();
+	});
+}
+
 middleware.privateUploads = function(req, res, next) {
 	if (req.user || parseInt(meta.config.privateUploads, 10) !== 1) {
 		return next();