Return count when updating or deleting models

lib/mysql.js

@@ -641,6 +641,17 @@ MySQL.prototype.count = function count(model, callback, where) {
 
 };
 
+MySQL.prototype.update =
+MySQL.prototype.updateAll = function(model, where, data, cb) {
+  var query = 'UPDATE ' + this.tableEscaped(model) + ' SET ' +
+      this.toFields(model, data) + ' ' + this.buildWhere(model, where);
+  this.query(query, function(err, info) {
+    var affectedRows = info && typeof info.affectedRows === 'number' ?
+        info.affectedRows : undefined;
+    cb && cb(err, {count: affectedRows});
+  });
+};
+
 
 /**
  * Delete instances for the given model
@@ -657,8 +668,10 @@ MySQL.prototype.destroyAll = function destroyAll(model, where, callback) {
   }
   this.query('DELETE FROM '
       + this.tableEscaped(model) + ' ' + this.buildWhere(model, where || {}),
-    function (err, data) {
+    function(err, info) {
-      callback && callback(err, data);
+      var affectedRows = info && typeof info.affectedRows === 'number' ?
+          info.affectedRows : undefined;
+      callback && callback(err, {count: affectedRows});
     }.bind(this));
 };