31

我创建了以下角度指令,即在ParentDirective中使用的ChildDirective

var wizardModule = angular.module('Wizard', []);

wizardModule.directive('childDirective', function ($http, $templateCache, $compile, $parse) {
return {
    restrict: 'E',
    scope: [],
    compile: function (iElement, iAttrs, transclude) {
        iElement.append('child directive<br />');
    }
}
})

wizardModule.directive('parentDirective', function ($http, $compile) {
return {
    restrict: 'E',
    compile: function (element, attrs) {
        var x = '<child-directive></child-directive><child-directive></child-directive>';
        element.append(x);
    }
}

这工作正常,并且出现了几个子指令。

我想更新ParentDirective,以从服务器获取childDirectives列表。因此,我更新了ParentDirective代码以进行 ajax 调用,然后绘制ChildDirectives

var elem;
wizardModule.directive('parentDirective', function ($http, $compile) {
return {
    restrict: 'E',
    compile: function (element, attrs) {
        var controllerurl = attrs.controllerurl;
        elem = element;

        if (controllerurl) {
            $http.get(controllerurl + '/GetWizardItems').
            success(function (data, status, headers, config) {
                var x = '<child-directive></child-directive><child-directive></child-directive>';
                elem.append(x);
                $compile(x);
            });
        }
    }
}
});

问题是childDirectives不再出现,尽管在调试器中它正在进入 childDirective 的编译方法

4

1 回答 1

36

您必须将编译的元素链接到范围。而且由于您不再修改模板元素,您应该将新元素附加到链接元素。你可以这样做:

var elem;
wizardModule.directive('parentDirective', function ($http, $compile) {
return {
    restrict: 'E',
    compile: function (element, attrs) {
        var controllerurl = attrs.controllerurl;
        elem = element;

        if (controllerurl) {
          return function(scope,element){
            $http.get(controllerurl + '/GetWizardItems').
            success(function (data, status, headers, config) {
                var x = angular.element('<child-directive></child-directive><child-directive></child-directive>');
                element.append(x);
                $compile(x)(scope);
            });
          }
        }
    }
}
});
于 2013-05-28T08:43:03.207 回答