V3 #7404 make it possible to pass parameters to getter functions (#7435) (#7441)

* #7404 make it possible to pass parameters to getter functions (#7435)

https://github.com/sequelize/sequelize/issues/7404

* [ci-skip] Changelog

changelog.md

+# Future
+- [FIXED] Passing parameters to model getters [#7404](https://github.com/sequelize/sequelize/issues/7404)
+
 # 3.30.3
 - [ADDED] Ability to run transactions on a read-replica by marking transactions as read only [#7323](https://github.com/sequelize/sequelize/issues/7323)
 - [FIXED] Add quotes around column names for unique constraints in sqlite [#4407](https://github.com/sequelize/sequelize/issues/4407)

lib/instance.js

@@ -182,17 +182,19 @@ Instance.prototype.get = function(key, options) { // testhint options:none
     key = undefined;
   }
 
+  options = options || {};
+
   if (key) {
     if (this._customGetters[key]) {
-      return this._customGetters[key].call(this, key);
+      return this._customGetters[key].call(this, key, options);
     }
     if (options && options.plain && this.$options.include && this.$options.includeNames.indexOf(key) !== -1) {
       if (Array.isArray(this.dataValues[key])) {
         return this.dataValues[key].map(function (instance) {
-          return instance.get({plain: options.plain});
+          return instance.get(options);
         });
       } else if (this.dataValues[key] instanceof Instance) {
-        return this.dataValues[key].get({plain: options.plain});
+        return this.dataValues[key].get(options);
       } else {
         return this.dataValues[key];
       }

test/integration/instance/values.test.js

@@ -372,6 +372,67 @@ describe(Support.getTestDialectTeaser('DAO'), function() {
           expect(product.get({clone: true}).title).to.be.ok;
         });
       });
+
+      it('can pass parameters to getters', function () {
+        var Product = this.sequelize.define('product', {
+          title: Sequelize.STRING
+        }, {
+          getterMethods: {
+            rating: function (key, options) {
+              if (options.apiVersion > 1) {
+                return 100;
+              }
+
+              return 5;
+            }
+          }
+        });
+
+        var User = this.sequelize.define('user', {
+          first_name: Sequelize.STRING,
+          last_name: Sequelize.STRING
+        }, {
+          getterMethods: {
+            height: function (key, options) {
+              if (options.apiVersion > 1) {
+                return 185; // cm
+              }
+
+              return 6.06; // ft
+            }
+          }
+        });
+
+        Product.belongsTo(User);
+
+        var product = Product.build({}, {
+          include: [
+            User
+          ]
+        });
+
+        product.set({
+          id: 1,
+          title: 'Chair',
+          user: {
+            id: 1,
+            first_name: 'Jozef',
+            last_name: 'Hartinger'
+          }
+        });
+
+        expect(product.get('rating')).to.equal(5);
+        expect(product.get('rating', {apiVersion: 2})).to.equal(100);
+
+        expect(product.get({plain: true})).to.have.property('rating', 5);
+        expect(product.get({plain: true}).user).to.have.property('height', 6.06);
+        expect(product.get({plain: true, apiVersion: 1})).to.have.property('rating', 5);
+        expect(product.get({plain: true, apiVersion: 1}).user).to.have.property('height', 6.06);
+        expect(product.get({plain: true, apiVersion: 2})).to.have.property('rating', 100);
+        expect(product.get({plain: true, apiVersion: 2}).user).to.have.property('height', 185);
+
+        expect(product.get('user').get('height', {apiVersion: 2})).to.equal(185);
+      });
     });
 
     describe('changed', function() {