Support silent: true in bulk update

changelog.md

+# FUTURE
+- [ADDED] Support silent: true in bulk update [#5200](https://github.com/sequelize/sequelize/issues/5200)
+
 # 3.17.3
 - [FIXED] Regression with array values from security fix in 3.17.2
 

lib/model.js

@@ -2401,6 +2401,7 @@ Model.prototype.restore = function(options) {
  * @param  {Function}     [options.logging=false] A function that gets executed while running the query to log the sql.
  * @param  {Boolean}      [options.benchmark=false] Print query execution time in milliseconds when logging SQL.
  * @param  {Transaction}  [options.transaction] Transaction to run query under
+ * @param  {Boolean}      [options.silent=false] If true, the updatedAt timestamp will not be updated.
  *
  * @return {Promise<Array<affectedCount,affectedRows>>}
  */
@@ -2442,7 +2443,7 @@ Model.prototype.update = function(values, options) {
     }
   }
 
-  if (this._timestampAttributes.updatedAt) {
+  if (this._timestampAttributes.updatedAt && !options.silent) {
     values[this._timestampAttributes.updatedAt] = this.$getDefaultTimestamp(this._timestampAttributes.updatedAt) || Utils.now(this.sequelize.options.dialect);
   }
 

test/integration/instance.test.js

@@ -1085,6 +1085,37 @@ describe(Support.getTestDialectTeaser('Instance'), function() {
       });
     });
 
+    it('does not update timestamps when passing silent=true in a bulk update', function() {
+      var self = this
+        , updatedAtPeter
+        , updatedAtPaul
+        , data = [
+          { username: 'Paul' },
+          { username: 'Peter' }
+        ];
+
+      return this.User.bulkCreate(data).then(function() {
+        return self.User.findAll();
+      }).then(function(users) {
+        updatedAtPaul = users[0].updatedAt;
+        updatedAtPeter = users[1].updatedAt;
+      })
+      .then(function() {
+        return self.sequelize.Promise.delay(150);
+      })
+      .then(function() {
+        return self.User.update(
+          { aNumber: 1 },
+          { where: {}, silent: true }
+        );
+      }).then(function() {
+        return self.User.findAll();
+      }).then(function(users) {
+        expect(users[0].updatedAt).to.equalTime(updatedAtPeter);
+        expect(users[1].updatedAt).to.equalTime(updatedAtPaul);
+      });
+    });
+
     describe('when nothing changed', function() {
 
       beforeEach(function () {