fix(handlers): Relative path when structure not flat

When the handlers directory structure is not flat, the relative path to
the models directory will vary so instead of assuming that it is flat
leverage the actual path of the handler to determine relative path
to specific database model module.

handlers/index.js

@@ -95,7 +95,7 @@ module.exports = yeoman.Base.extend({
 
                 // provides access to lodash within the template
                 route._ = _;
-                route.dbmodels = self._getDbModels(route);
+                route.dbmodels = self._getDbModels(route, path.dirname(file));
                 if (!self.options['dry-run']) {
                     self.template('_handler.js', file, route);
                 } else {
@@ -203,10 +203,9 @@ module.exports = yeoman.Base.extend({
         }
     },
 
-    _getDbModels: function getDbModels(route) {
+    _getDbModels: function getDbModels(route, relPath) {
         var self = this;
         var dbModels = [];
-        var relPath = upath.joinSafe(self.appRoot, 'handlers');
         var single, dbFileName, className;
 
         if (!self.config.get('database')) {