用户访问首页的时候，会默认路由到注册页面register.htm，而register.htm中定义了属性指令ensure-unique,但是directive.js中指令没有绑定上，指令没有起作用，不知道是何原因，前端没有报错，请帮忙看下
首页index.htm

service.js是空的，留着以后用

app.js

myApp = angular.module("myApp", ["ui.bootstrap", "ngRoute"]);

myApp.config(['$routeProvider',
    function ($routeProvider) {
        $routeProvider.
            when('/index', {
                templateUrl: 'templates/index.htm'
            }).
            when('/register', {
                templateUrl: 'templates/register.htm'
            }).
            when('/login', {
                templateUrl: 'templates/login.htm'
            }).
            otherwise({
                redirectTo: '/register'
            });
    }]);

register.htm 注册页面,这里增加了属性指令ensure-unique

    

        

            Email Address
            

            

                邮件名不能为空
                非法的邮箱地址
            
        

        

            Username
            

            

                用户名不能为空
            
        

        

            Password
            

            

                密码不能为空
                密码长度至少为6
                密码长度不能超过10
            
        

        

            Repassword
            

            

                密码与重复密码不一致
            
        

        Submit
    

directive.js

myAppDirective=angular.module("myAppDirective",[]);

myAppDirective.directive('ensureUnique', ['$http', function ($http) {
    return {
        require: 'ngModel',
        link: function (scope, ele, attrs, c) {
            console.log("executed!");
            ele.bind('blur', function () {
                if (attrs.ensureUnique == "username") {
                    $http({
                        method: 'POST',
                        url: 'check/' + attrs.ensureUnique + ".html",
                        data: {"username": scope.username}
                    }).success(function (data, status, headers, cfg) {
                        c.$setValidity('unique', true);
                    }).error(function (data, status, headers, cfg) {
                        c.$setValidity('unique', false);
                    });
                } else if (attrs.ensureUnique == "email") {
                    $http({
                        method: 'POST',
                        url: 'check/' + attrs.ensureUnique + ".html",
                        data: {"email": scope.email}
                    }).success(function (data, status, headers, cfg) {
                        c.$setValidity('unique', true);
                    }).error(function (data, status, headers, cfg) {
                        c.$setValidity('unique', false);
                    });
                }
            });
        }
    }
}]);