closes #4749

public/language/en_GB/error.json

@@ -86,6 +86,7 @@
 	"invalid-file-type": "Invalid file type. Allowed types are: %1",
 
 	"group-name-too-short": "Group name too short",
+	"group-name-too-long": "Group name too long",
 	"group-already-exists": "Group already exists",
 	"group-name-change-not-allowed": "Group name change not allowed",
 	"group-already-member": "Already part of this group",

src/groups/create.js

@@ -1,10 +1,10 @@
 'use strict';
 
-var async = require('async'),
+var async = require('async');
-	meta = require('../meta'),
+var meta = require('../meta');
-	plugins = require('../plugins'),
+var plugins = require('../plugins');
-	utils = require('../../public/src/utils'),
+var utils = require('../../public/src/utils');
-	db = require('../database');
+var db = require('../database');
 
 module.exports = function(Groups) {
 
@@ -79,6 +79,10 @@ module.exports = function(Groups) {
 			return callback(new Error('[[error:group-name-too-short]]'));
 		}
 
+		if (name.length > (parseInt(meta.config.maximumGroupNameLength, 10) || 255)) {
+			return callback(new Error('[[error:group-name-too-long]]'));
+		}
+
 		if (name.indexOf('/') !== -1) {
 			return callback(new Error('[[error:invalid-group-name]]'));
 		}

src/views/admin/settings/group.tpl

@@ -28,6 +28,9 @@
 			<p class="help-block">
 				If enabled, users can create groups <em>(Default: disabled)</em>
 			</p>
+
+			<label>Maximum Group Name Length</label>
+			<input class="form-control" type="text" placeholder="255" data-field="maximumGroupNameLength" />
 		</form>
 	</div>
 </div>