Copy the options object in association getters

changelog.md

 # Next
 - [BUG] Add support for `field` named the same as the attribute in `reload`, `bulkCreate` and `save` [#2348](https://github.com/sequelize/sequelize/issues/2348)
+- [BUG] Copy the options object in association getters. [#2311](https://github.com/sequelize/sequelize/issues/2311)
 
 # 2.0.0-rc2
 - [FEATURE] Added to posibility of using a sequelize object as key in `sequelize.where`. Also added the option of specifying a comparator

lib/associations/belongs-to.js

@@ -100,7 +100,7 @@ module.exports = (function() {
     instancePrototype[this.accessors.get] = function(params) {
       var where = {};
 
-      params = params || {};
+      params = association.target.__optClone(params) || {};
       params.where = (params.where && [params.where]) || [];
 
       where[association.targetIdentifier] = this.get(association.identifier);

lib/associations/has-many.js

@@ -323,7 +323,7 @@ module.exports = (function() {
     var association = this;
 
     obj[this.accessors.get] = function(options, queryOptions) {
-      options = options || {};
+      options = association.target.__optClone(options) || {};
       queryOptions = queryOptions || {};
       var Class = Object(association.through.model) === association.through.model ? HasManyDoubleLinked : HasManySingleLinked;
       return new Class(association, this).injectGetter(options, queryOptions);

lib/associations/has-one.js

@@ -94,7 +94,7 @@ module.exports = (function() {
     instancePrototype[this.accessors.get] = function(params) {
       var where = {};
 
-      params = params || {};
+      params = association.target.__optClone(params) || {};
       params.where = (params.where && [params.where]) || [];
 
       where[association.identifier] = this.get(association.sourceIdentifier);

lib/model.js

@@ -2009,7 +2009,7 @@ module.exports = (function() {
     })(this, includes);
   };
 
-  var optClone = function(options) {
+  var optClone = Model.prototype.__optClone = function(options) {
     return Utils._.cloneDeep(options, function(elem) {
       // The InstanceFactories used for include are pass by ref, so don't clone them.
       if (elem &&

test/associations/belongs-to.test.js

@@ -57,6 +57,23 @@ describe(Support.getTestDialectTeaser("BelongsTo"), function() {
       })
     })
 
+    it('does not modify the passed arguments', function () {
+      var User = this.sequelize.define('user', {})
+        , Project = this.sequelize.define('project', {});
+
+      User.belongsTo(Project);
+
+      return this.sequelize.sync({ force: true }).bind(this).then(function () {
+        return User.create({});
+      }).then(function (user) {
+        this.options = {};
+
+        return user.getProject(this.options);
+      }).then(function () {
+        expect(this.options).to.deep.equal({});
+      });
+    });
+
     it('should be able to handle a where object that\'s a first class citizen.', function() {
       var User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING, gender: Sequelize.STRING })
         , Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING, status: Sequelize.STRING })

test/associations/has-many.test.js

@@ -597,6 +597,16 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
         });
       });
 
+      it('does not modify the passed arguments', function () {
+        return this.User.create({}).bind(this).then(function (user) {
+          this.options = {};
+
+          return user.getTasks(this.options);
+        }).then(function () {
+          expect(this.options).to.deep.equal({});
+        });
+      });
+
       it('should treat the where object of associations as a first class citizen', function() {
         var self = this;
         this.Article = this.sequelize.define('Article', {
@@ -753,6 +763,16 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
         });
       });
 
+      it('does not modify the passed arguments', function () {
+        return this.User.create({}).bind(this).then(function (user) {
+          this.options = {};
+
+          return user.getTasks(this.options);
+        }).then(function () {
+          expect(this.options).to.deep.equal({});
+        });
+      });
+
       it('supports transactions', function() {
         return Support.prepareTransactionTest(this.sequelize).bind({}).then(function(sequelize) {
           this.sequelize = sequelize;

test/associations/has-one.test.js

@@ -57,6 +57,23 @@ describe(Support.getTestDialectTeaser("HasOne"), function() {
       })
     })
 
+    it('does not modify the passed arguments', function () {
+      var User = this.sequelize.define('user', {})
+        , Project = this.sequelize.define('project', {});
+
+      User.hasOne(Project);
+
+      return this.sequelize.sync({ force: true }).bind(this).then(function () {
+        return User.create({});
+      }).then(function (user) {
+        this.options = {};
+
+        return user.getProject(this.options);
+      }).then(function () {
+        expect(this.options).to.deep.equal({});
+      });
+    });
+
     it('should be able to handle a where object that\'s a first class citizen.', function(done) {
       var User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING })
         , Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING, status: Sequelize.STRING })