1:M createAssociation should only use one query and fix transactions for createAssociation

lib/associations/has-many.js

@@ -394,9 +394,9 @@ module.exports = (function() {
 
       if ((fieldsOrOptions || {}).transaction instanceof Transaction) {
         options.transaction = fieldsOrOptions.transaction
-        delete fieldsOrOptions.transaction
       }
 
+      if (Object(self.through) === self.through) {
         return new Utils.CustomEventEmitter(function(emitter) {
           // Create the related model instance
           self.target
@@ -407,6 +407,10 @@ module.exports = (function() {
                 .proxy(emitter)
             })
         }).run()
+      } else {
+        values[self.identifier] = instance.get(self.source.primaryKeyAttribute);
+        return self.target.create(values, fieldsOrOptions)
+      }
     }
 
     return this

test/associations/has-many.test.js

@@ -349,12 +349,16 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
       it('creates the object with the association directly', function(done) {
         var spy = sinon.spy()
 
-        var Article = this.sequelize.define('Article', { 'title': DataTypes.STRING })
-          , Label   = this.sequelize.define('Label', { 'text': DataTypes.STRING,
+        var Article = this.sequelize.define('Article', {
+          'title': DataTypes.STRING
+
+        }), Label   = this.sequelize.define('Label', {
+          'text': DataTypes.STRING,
           'ArticleId': {
             type: DataTypes.INTEGER,
             allowNull: false
-                                                       }})
+          }
+        })
 
         Article.hasMany(Label)
 
@@ -362,7 +366,7 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
           Label.sync({ force: true }).success(function() {
             Article.create({ title: 'foo' }).success(function(article) {
               article.createLabel({ text: 'bar' }).on('sql', spy).complete(function(err, label) {
-                expect(err).to.not.be.ok
+                expect(err).not.to.be.ok
                 expect(spy.calledOnce).to.be.true
                 expect(label.ArticleId).to.equal(article.id)
                 done()
@@ -384,7 +388,9 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
             Label.sync({ force: true }).success(function() {
               Article.create({ title: 'foo' }).success(function(article) {
                 sequelize.transaction(function (t) {
-                  article.createLabel({ text: 'bar' }, { transaction: t }).success(function(label) {
+                  article.createLabel({ text: 'bar' }, { transaction: t }).success(function() {
+                    Label.findAll().success(function (labels) {
+                      expect(labels.length).to.equal(0);
                       Label.findAll({ where: { ArticleId: article.id }}).success(function(labels) {
                         expect(labels.length).to.equal(0)
                         Label.findAll({ where: { ArticleId: article.id }}, { transaction: t }).success(function(labels) {
@@ -400,6 +406,7 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
           })
         })
       })
+    })
 
     describe("getting assocations with options", function() {
       beforeEach(function(done) {