fix: regression with reload() and attributes option, closes #3976

changelog.md

+# 3.3.1
+- [FIXED] regression in `attributes` support for 'reload' [#3976](https://github.com/sequelize/sequelize/issues/3976)
+
 # 3.3.0
 - [FIXED] Fix `Promise#nodeify()` and `Promise#done()` not passing CLS context
 - [FIXED] Creating and dropping enums in transaction, only for PostgreSQL [#3782](https://github.com/sequelize/sequelize/issues/3782)

lib/instance.js

@@ -713,21 +713,18 @@ Instance.prototype.save = function(options) {
 * @return {Promise<this>}
 */
 Instance.prototype.reload = function(options) {
-  var self = this
-    , where = [
-      this.sequelize.getQueryInterface().quoteTable(this.Model.name) + '.' + this.sequelize.getQueryInterface().quoteIdentifier(this.Model.primaryKeyField) + '=?',
-      this.get(this.Model.primaryKeyAttribute, {raw: true})
-    ];
-
   options = _.defaults(options || {}, {
-    where: where,
+    where: this.where(),
     limit: 1,
     include: this.options.include || null
   });
 
-  return this.Model.findOne(options).then(function(reload) {
-    self.set(reload.dataValues, {raw: true, reset: true});
-  }).return(self);
+  return this.Model.findOne(options).bind(this).then(function(reload) {
+    this.set(reload.dataValues, {
+      raw: true,
+      reset: true && !options.attributes
+    });
+  }).return(this);
 };
 
 /*

test/integration/instance.test.js

@@ -427,6 +427,28 @@ describe(Support.getTestDialectTeaser('Instance'), function() {
       });
     });
 
+    it('should support updating a subset of attributes', function () {
+      return this.User.create({
+        aNumber: 1,
+        bNumber: 1,
+      }).bind(this).tap(function (user) {
+        return this.User.update({
+          bNumber: 2
+        }, {
+          where: {
+            id: user.get('id')
+          }
+        });
+      }).then(function (user) {
+        return user.reload({
+          attributes: ['bNumber']
+        });
+      }).then(function (user) {
+        expect(user.get('aNumber')).to.equal(1);
+        expect(user.get('bNumber')).to.equal(2);
+      });
+    });
+
     it('should update read only attributes as well (updatedAt)', function() {
       var self = this;