嗨,我试图创建一个显示加载框实现,但我似乎有一些问题。以下是目前为止的内容:
我已经创建了一个httpInterceptor: mainModule.factory('httpLoadingInterceptorSvc', ['$q', '$injector', 'EVENTS', function ($q, $injector, EVENTS) {
var httpInterceptorSvc = {};
httpInterceptorSvc.request = function (request) {
var rootScope = $injector.get('$rootScope');
rootScope.$broadcast(EVENTS.LOADING_SHOW);
return $q.when(request);
};
httpInterceptorSvc.requestError = function (rejection) {
hideLoadingBox();
return $q.reject(rejection);
};
httpInterceptorSvc.response = function (response) {
hideLoadingBox();
return $q.when(response);
};
httpInterceptorSvc.responseError = function (rejection) {
hideLoadingBox();
return $q.reject(rejection);
};
function hideLoadingBox() {
var $http = $injector.get('$http');
if ($http.pendingRequests.length < 1) {
var rootScope = $injector.get('$rootScope');
rootScope.$broadcast(EVENTS.LOADING_HIDE);
}
}
return httpInterceptorSvc;
}]);
然后我把这个指令添加到httpProvideR的拦截器中:
$httpProvider.interceptors.push('httpLoadingInterceptorSvc');
然后创建了一个指令:
mainModule.directive('loadingDir', ['EVENTS', function (EVENTS) {
var loadingDir = {
restrict: 'E',
templateUrl: 'App/scripts/main/directives/loading/LoadingDir.html'
};
loadingDir.link = function (scope, element) {
element.hide();
scope.$on(EVENTS.LOADING_SHOW, function () {
element.show();
});
scope.$on(EVENTS.LOADING_HIDE, function () {
element.hide();
});
};
return loadingDir;
}]);
然后添加了一个简单的ajaxCall,在控制器上发出警告消息:
dataSvc.getCurrentDate().then(function(currentDate) {
alert(currentDate);
});
我把指令放在html页面上:
<loading-dir></loading-dir>
现在我的问题是指令代码在控制器代码之后执行,这使得指令相对有用,直到页面加载。是否有任何方法使指令代码在控制器之前执行?
你可以在你的页面前添加一个div:
<body>
<div controller="beforeController">
<loading-dir></loading-dir>
</div>
[Rest of the page]
</body>