Implemented more complex scenaro: embedsMany + relations

The test case will denormalize data into the embedded object,
and re-use the actual related object id as its own id.

lib/dao.js

@@ -1047,6 +1047,17 @@ DataAccessObject.prototype.remove =
       }, null, cb);
     };
     
+/**
+ * Set a single attribute.
+ * Equivalent to `setAttributes({name: value})`
+ *
+ * @param {String} name Name of property
+ * @param {Mixed} value Value of property
+ */
+DataAccessObject.prototype.setAttribute = function setAttribute(name, value) {
+  this[name] = value;
+};    
+
 /**
  * Update a single attribute.
  * Equivalent to `updateAttributes({name: value}, cb)`
@@ -1062,7 +1073,27 @@ DataAccessObject.prototype.updateAttribute = function updateAttribute(name, valu
 };
 
 /**
- * Update saet of attributes.
+ * Update set of attributes.
+ *
+ * @trigger `change` hook
+ * @param {Object} data Data to update
+ */
+DataAccessObject.prototype.setAttributes = function setAttributes(data) {
+  if (typeof data !== 'object') return;
+  
+  var Model = this.constructor;
+  var inst = this;
+  
+  // update instance's properties
+  for (var key in data) {
+    inst.setAttribute(key, data[key]);
+  }
+  
+  Model.emit('set', inst);
+};
+
+/**
+ * Update set of attributes.
  * Performs validation before updating.
  *
  * @trigger `validation`, `save` and `update` hooks
@@ -1086,9 +1117,7 @@ DataAccessObject.prototype.updateAttributes = function updateAttributes(data, cb
   }
 
   // update instance's properties
-  for (var key in data) {
-    inst[key] = data[key];
-  }
+  inst.setAttributes(data);
 
   inst.isValid(function (valid) {
     if (!valid) {

lib/relation-definition.js

@@ -1057,6 +1057,11 @@ BelongsTo.prototype.related = function (refresh, params) {
     modelTo = params.constructor;
     modelInstance[fk] = params[pk];
     if (discriminator) modelInstance[discriminator] = params.constructor.modelName;
+    
+    var data = {};
+    this.definition.applyProperties(params, data);
+    modelInstance.setAttributes(data);
+    
     self.resetCache(params);
   } else if (typeof params === 'function') { // acts as async getter
     
@@ -1525,7 +1530,9 @@ RelationDefinition.embedsMany = function hasMany(modelFrom, modelTo, params) {
 };
 
 EmbedsMany.prototype.related = function(receiver, scopeParams, condOrRefresh, cb) {
-  var name = this.definition.name;
+  var modelTo = this.definition.modelTo;
+  var relationName = this.definition.name;
+  var modelInstance = this.modelInstance;
   var self = receiver;
   
   var actualCond = {};
@@ -1543,14 +1550,29 @@ EmbedsMany.prototype.related = function(receiver, scopeParams, condOrRefresh, cb
     throw new Error('Method can be only called with one or two arguments');
   }
   
-  var embeddedList = self[name] || [];
+  var embeddedList = self[relationName] || [];
+  
+  this.definition.applyScope(modelInstance, actualCond);
   
   var params = mergeQuery(actualCond, scopeParams);
+  
   if (params.where) {
     embeddedList = embeddedList ? embeddedList.filter(applyFilter(params)) : embeddedList;
   }
   
-  process.nextTick(function() { cb(null, embeddedList); });
+  var returnRelated = function(list) {
+    if (params.include) {
+      modelTo.include(list, params.include, cb);
+    } else {
+      process.nextTick(function() { cb(null, list); });
+    }
+  };
+  
+  if (actualRefresh) {
+    
+  }
+  
+  returnRelated(embeddedList);
 };
 
 EmbedsMany.prototype.findById = function (fkId, cb) {
@@ -1722,10 +1744,6 @@ EmbedsMany.prototype.build = HasOne.prototype.build = function(targetModelData)
   
   var embeddedList = modelInstance[relationName] || [];
   
-  if (typeof targetModelData === 'function' && !cb) {
-    cb = targetModelData;
-    targetModelData = {};
-  }
   targetModelData = targetModelData || {};
   
   if (typeof targetModelData[pk] !== 'number' && autoId) {

test/relations.test.js

@@ -1221,6 +1221,9 @@ describe('relations', function () {
   });
   
   describe('embedsMany', function () {
+    
+    var address1, address2;
+    
     before(function (done) {
       db = getSchema();
       Person = db.define('Person', {name: String});
@@ -1250,7 +1253,6 @@ describe('relations', function () {
       p.addressList.build.should.be.a.function;
     });
 
-    var address1, address2;
     it('should create embedded items on scope', function(done) {
       Person.create({ name: 'Fred' }, function(err, p) {
         p.addressList.create({ street: 'Street 1' }, function(err, addresses) {
@@ -1541,4 +1543,112 @@ describe('relations', function () {
     
   });
   
+  describe('embedsMany - relations, scope and properties', function () {
+    
+    var product1, product2;
+    
+    before(function (done) {
+      db = getSchema();
+      Category = db.define('Category', {name: String});
+      Product = db.define('Product', {name: String});
+      Link = db.define('Link');
+
+      db.automigrate(function () {
+        Person.destroyAll(done);
+      });
+    });
+
+    it('can be declared', function (done) {
+      Category.embedsMany(Link, { 
+        as: 'items', // rename
+        scope: { include: 'product' } // always include
+      });
+      Link.belongsTo(Product, { 
+        foreignKey: 'id', // re-use the actual product id
+        properties: { id: 'id', name: 'name' }, // denormalize, transfer id
+      });
+      db.automigrate(done);
+    });
+    
+    it('should setup related items', function(done) {
+      Product.create({ name: 'Product 1' }, function(err, p) {
+        product1 = p;
+        Product.create({ name: 'Product 2' }, function(err, p) {
+          product2 = p;
+          done();
+        });
+      });
+    });
+    
+    it('should create item on scope', function(done) {
+      Category.create({ name: 'Category A' }, function(err, cat) {
+        var link = cat.items.build();
+        link.product(product1);
+        var link = cat.items.build();
+        link.product(product2);
+        cat.save(function(err, cat) {
+          var product = cat.items.at(0);
+          product.id.should.equal(product1.id);
+          product.name.should.equal(product1.name);
+          var product = cat.items.at(1);
+          product.id.should.equal(product2.id);
+          product.name.should.equal(product2.name);
+          done();
+        });
+      });
+    });
+    
+    it('should include related items on scope', function(done) {
+      Category.findOne(function(err, cat) {
+        cat.links.should.have.length(2);
+        
+        // denormalized properties:
+        cat.items.at(0).id.should.equal(product1.id);
+        cat.items.at(0).name.should.equal(product1.name);
+        cat.items.at(1).id.should.equal(product2.id);
+        cat.items.at(1).name.should.equal(product2.name);
+        
+        // lazy-loaded relations
+        should.not.exist(cat.items.at(0).product());
+        should.not.exist(cat.items.at(1).product());
+        
+        cat.items(function(err, items) {
+          cat.items.at(0).product().should.be.instanceof(Product);
+          cat.items.at(1).product().should.be.instanceof(Product);
+          cat.items.at(1).product().name.should.equal('Product 2');
+          done();
+        });
+      });
+    });
+    
+    it('should remove embedded items by id', function(done) {
+      Category.findOne(function(err, cat) {
+        cat.links.should.have.length(2);
+        cat.items.destroy(product1.id, function(err) {
+          should.not.exist(err);
+          cat.links.should.have.length(1);
+          done();
+        });
+      });
+    });
+    
+    it('should find items on scope', function(done) {
+      Category.findOne(function(err, cat) {
+        cat.links.should.have.length(1);
+        cat.items.at(0).id.should.equal(product2.id);
+        cat.items.at(0).name.should.equal(product2.name);
+        
+        // lazy-loaded relations
+        should.not.exist(cat.items.at(0).product());
+        
+        cat.items(function(err, items) {
+          cat.items.at(0).product().should.be.instanceof(Product);
+          cat.items.at(0).product().name.should.equal('Product 2');
+          done();
+        });
+      });
+    });
+    
+  });
+
 });