Build the email verification url from app context

https://github.com/strongloop/loopback/issues/408

lib/models/user.js

@@ -277,6 +277,7 @@ User.prototype.hasPassword = function (plain, fn) {
 
 User.prototype.verify = function (options, fn) {
   var user = this;
+  var userModel = this.constructor;
   assert(typeof options === 'object', 'options required when calling user.verify()');
   assert(options.type, 'You must supply a verification type (options.type)');
   assert(options.type === 'email', 'Unsupported verification type');
@@ -287,13 +288,20 @@ User.prototype.verify = function (options, fn) {
   options.template = path.resolve(options.template || path.join(__dirname, '..', '..', 'templates', 'verify.ejs'));
   options.user = this;
   options.protocol = options.protocol || 'http';
-  options.host = options.host || 'localhost';
+
+  var app = this.app;
+  options.host = options.host || (app && app.get('host')) || 'localhost';
+  options.port = options.port || (app && app.get('port')) || 3000;
+  options.restApiRoot = options.restApiRoot ||  (app && app.get('restApiRoot')) || '/api';
   options.verifyHref = options.verifyHref ||
                        options.protocol
                        + '://'
                        + options.host
-                       + User.http.path
-                       + User.confirm.http.path
+                       + ':'
+                       + options.port
+                       + options.restApiRoot
+                       + userModel.http.path
+                       + userModel.confirm.http.path
                        + '?uid='
                        + options.user.id
                        + '&redirect='

test/user.test.js

@@ -454,7 +454,9 @@ describe('User', function(){
             assert(result.email);
             assert(result.email.response);
             assert(result.token);
-            assert(~result.email.response.toString('utf-8').indexOf('To: bar@bat.com'));
+            var msg = result.email.response.toString('utf-8');
+            assert(~msg.indexOf('/api/users/confirm'));
+            assert(~msg.indexOf('To: bar@bat.com'));
             done();
           });
         });