js: add failure callbacks to ajax functions to allow custom

behaviour on failed requests

rhodecode/public/js/src/rhodecode/utils/ajax.js

@@ -1,62 +1,70 b''
 // # Copyright (C) 2010-2016  RhodeCode GmbH
 // #
 // # This program is free software: you can redistribute it and/or modify
 // # it under the terms of the GNU Affero General Public License, version 3
 // # (only), as published by the Free Software Foundation.
 // #
 // # This program is distributed in the hope that it will be useful,
 // # but WITHOUT ANY WARRANTY; without even the implied warranty of
 // # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // # GNU General Public License for more details.
 // #
 // # You should have received a copy of the GNU Affero General Public License
 // # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #
 // # This program is dual-licensed. If you wish to learn more about the
 // # RhodeCode Enterprise Edition, including its added features, Support services,
 // # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 /**
 * turns objects into GET query string
 */
 var toQueryString = function(o) {
   if(typeof o === 'string') {
     return o;
   }
   if(typeof o !== 'object') {
     return false;
   }
   var _p, _qs = [];
   for(_p in o) {
     _qs.push(encodeURIComponent(_p) + '=' + encodeURIComponent(o[_p]));
   }
   return _qs.join('&');
 };
 
 /**
 * ajax call wrappers
 */
-var ajaxGET = function(url, success) {
+var ajaxGET = function(url, success, failure) {
   var sUrl = url;
   var request = $.ajax({url: sUrl, headers: {'X-PARTIAL-XHR': true}})
   .done(function(data){
     success(data);
   })
-  .fail(function(data, textStatus, xhr){
-    alert("error processing request: " + textStatus);
+  .fail(function(data, textStatus, xhr) {
+    if (failure) {
+      failure(data, textStatus, xhr);
+    } else {
+      alert("error processing request: " + textStatus);
+    }
   });
   return request;
 };
-var ajaxPOST = function(url,postData,success) {
+var ajaxPOST = function(url, postData, success, failure) {
   var sUrl = url;
   var postData = toQueryString(postData);
   var request = $.ajax({type: 'POST', data: postData, url: sUrl,
     headers: {'X-PARTIAL-XHR': true}})
   .done(function(data){
     success(data);
   })
   .fail(function(data, textStatus, xhr){
-    alert("error processing request: " + textStatus);
+    if (failure) {
+      failure(data, textStatus, xhr);
+    } else {
+      alert("error processing request: " + textStatus);
+    }
   });
   return request;
 };