Add fillModel to router to allow the trigger of change only for the u…

…pdated attribute when performing an update (PUT) of a model, instead of triggering change even for all the attributes.

servers/Route.bones

@@ -79,10 +79,10 @@ server.prototype.initializeAssets = function(app) {
 
 server.prototype.initializeModels = function(app) {
     this.models = app.models;
-    _.bindAll(this, 'loadModel', 'getModel', 'saveModel', 'delModel', 'loadCollection');
+    _.bindAll(this, 'loadModel', 'getModel', 'fillModel', 'saveModel', 'delModel', 'loadCollection');
     this.get('/api/:model/:id', this.loadModel, this.getModel);
     this.post('/api/:model', this.loadModel, this.saveModel);
-    this.put('/api/:model/:id', this.loadModel, this.saveModel);
+    this.put('/api/:model/:id', this.loadModel, this.fillModel, this.saveModel);
     this.del('/api/:model/:id', this.loadModel, this.delModel);
     this.get('/api/:collection', this.loadCollection.bind(this));
 };
@@ -128,6 +128,19 @@ server.prototype.getModel = function(req, res, next) {
     });
 };
 
+server.prototype.fillModel = function(req, res, next) {
+    if (!req.model) return next();
+    req.model.fetch({
+        success: function(model, resp) {
+            next();
+        },
+        error: function(model, err) {
+            err = err instanceof Object ? err.toString() : err;
+            next(new Error.HTTP(err, 404));
+        }
+    });
+};
+
 server.prototype.saveModel = function(req, res, next) {
     if (!req.model) return next();
     req.model.save(req.body, {