AngularJS-动态将服务传递给指令

时间:2019-01-11 11:39:39

标签: angularjs angularjs-directive

我必须在angularjs 1.2中优化应用程序

这是代码玉器文件,我将服务动态传递到我的指令(creaDatos.jade)

div(datos-u, service="userDataSrv") // The div has associated a directive to which has service is dynamically passed

这是代码指令(datosU.js)

(appModule.lazy || appModule)
    .directive('datosU', [ function() {

        // Runs during compile
        return {
            restrict: 'A',
            scope: {
                service: '='
            },
            templateUrl: 'commons/html/user.html',
            controller: 'userCtrl'
        };
    }]);

这是代码控制器(userCtrl.js)

(appModule.lazy || appModule)
.controller('userCtrl', ['$scope', '$injector',
    function($scope, $injector) {

        var srv = $injector.get($scope.service); /* The variable "srv" should have the value "userDataSrv" but his value is "undefined", The value of "$scope.service" is "undefined" */

    }]);

这是浏览器控制台中的错误:

Error: [$injector:unpr] Unknown provider: undefinedProvider <- 
http://errors.angularjs.org/1.2.16/$injector/unpr?p0=undefinedProvider%20%3C-%20

我不知道我在做什么错,请您能帮我吗?

1 个答案:

答案 0 :(得分:1)

使用字符串绑定(service)代替=@)的双向绑定。

因此,将指令更改为此:

(appModule.lazy || appModule)
    .directive('datosU', [ function() {

        // Runs during compile
        return {
            restrict: 'A',
            scope: {
                service: '@'
            },
            templateUrl: 'commons/html/user.html',
            controller: 'userCtrl'
        };
    }]);