fix: mapValueFieldNames should only replace field names if value exists in targe…

…t, closes #3581, #3663

lib/model.js

@@ -1630,7 +1630,7 @@ module.exports = (function() {
         }
       });
     } else {
-      options.fields = Object.keys(this.tableAttributes);
+      options.fields = _.intersection(Object.keys(values), Object.keys(this.tableAttributes));
     }
 
     if (this._timestampAttributes.updatedAt) {

lib/utils.js

@@ -164,13 +164,14 @@ var Utils = module.exports = {
     fields.forEach(function(attr) {
       if (dataValues[attr] !== undefined && !Model._isVirtualAttribute(attr)) {
         values[attr] = dataValues[attr];
-      }
+      
 
         // Field name mapping
         if (Model.rawAttributes[attr] && Model.rawAttributes[attr].field && Model.rawAttributes[attr].field !== attr) {
           values[Model.rawAttributes[attr].field] = values[attr];
           delete values[attr];
         }
+      }
     });
 
     return values;

test/integration/model/update.test.js

+'use strict';
+
+/* jshint -W030 */
+var Support = require(__dirname + '/../support')
+  , DataTypes = require(__dirname + '/../../../lib/data-types');
+
+describe(Support.getTestDialectTeaser('Model'), function() {
+  describe('update', function () {
+    it('should only update the passed fields', function () {
+      var Account = this.sequelize.define('Account', {
+        ownerId: {
+          type: DataTypes.INTEGER,
+          allowNull: false,
+          field: 'owner_id'
+        },
+        name: {
+          type: DataTypes.STRING
+        }
+      });
+
+      return Account.sync({force: true, logging: console.log}).then(function () {
+        return Account.create({
+          ownerId: 2
+        }).then(function (account) {
+          return Account.update({
+            name: Math.random().toString()
+          }, {
+            where: {
+              id: account.get('id')
+            }
+          });
+        });
+      });
+    });
+  });
+});
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