好吧,我有一大堆$http()
呼籲各地的應用程序代碼,
我想知道有沒有發現任何方式/最佳實踐當所有$http()
各地應用程序已完成(成功/錯誤donesn't他們返回什麼,只需要知道是否完成)?
這樣我就可以顯示加載gif,直到他們加載?
感謝
好吧,我有一大堆$http()
呼籲各地的應用程序代碼,
我想知道有沒有發現任何方式/最佳實踐當所有$http()
各地應用程序已完成(成功/錯誤donesn't他們返回什麼,只需要知道是否完成)?
這樣我就可以顯示加載gif,直到他們加載?
感謝
做這樣的:
angular.module('app').factory('httpInterceptor', ['$q', '$rootScope',
function ($q, $rootScope) {
var loadingCount = 0;
return {
request: function (config) {
if(++loadingCount === 1) $rootScope.$broadcast('loading:progress');
return config || $q.when(config);
},
response: function (response) {
if(--loadingCount === 0) $rootScope.$broadcast('loading:finish');
return response || $q.when(response);
},
responseError: function (response) {
if(--loadingCount === 0) $rootScope.$broadcast('loading:finish');
return $q.reject(response);
}
};
}
]).config(['$httpProvider', function ($httpProvider) {
$httpProvider.interceptors.push('httpInterceptor');
}]);
然後使用事件勢必$rootScope
任何地方(最好在指令中使用):
$rootScope.$on('loading:progress', function(){
// show loading gif
});
$rootScope.$on('loading:finish', function(){
// hide loading gif
});
如果通過$q.all
$scope.request1 = $http.get('request1URL', {cache: false});
$scope.request2 = $http.get('request2URL', {'cache': false});
$scope.loading = true;
$q.all([$scope.request1, $scope.request2]).then(function(values) {
$scope.loading = false;
// Do whatever you want
// values[0], values[1]
});
使用ng-if
執行所有請求這是可能的,你可以顯示和隱藏加載gif
。
在情況下,如果使用不同的$http
呼叫,則必須在$rootScope
一個count
或array
並更新他們時$http
完整。基於count
或array.length
啓用加載gif
。
通過@karaxuna使用的答案,我實現了類似下面我的解決辦法。 Plunker
<!doctype html>
<html ng-app="ui.bootstrap.demo">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular-animate.js"></script>
<script src="https://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.14.3.js"></script>
<script>
var app = angular.module('ui.bootstrap.demo', ['ngAnimate', 'ui.bootstrap']);
app.config(['$httpProvider', function ($httpProvider) {
$httpProvider.interceptors.push(function ($q, $rootScope, $templateCache) {
var AjaxLoadingCount = 0;
return {
request: function (config) {
console.log("[config.interceptorService] request config", config);
if (++AjaxLoadingCount === 1)
{
if (!$templateCache.get(config.url)) {
$rootScope.$broadcast('AjaxLoading:Progress');
}
}
return config || $q.when(config);
},
requestError: function (rejection) {
console.log("[config.interceptorService] requestError rejection", rejection);
if(--AjaxLoadingCount === 0) $rootScope.$broadcast('AjaxLoading:Finish');
return $q.reject(rejection);
},
response: function (response) {
console.log("[config.interceptorService] response response", response);
if(--AjaxLoadingCount === 0) $rootScope.$broadcast('AjaxLoading:Finish');
return response || $q.when(response);
},
responseError: function (rejection) {
console.log("[config.interceptorService] responseError rejection", rejection);
if(--AjaxLoadingCount === 0) $rootScope.$broadcast('AjaxLoading:Finish');
return $q.reject(rejection);
}
};
});
}]);
app.factory('ajaxFactory', function ($http) {
var ajaxFactory = {};
ajaxFactory.LoadData = function() {
return $http({
method: "GET",
url: "http://www.w3schools.com/angular/customers.php",
});
};
return ajaxFactory;
});
app.controller('ModalDemoCtrl', function ($scope, ajaxFactory) {
$scope.doAjax = function() {
ajaxFactory.LoadData()
.success(function (data, status, headers, config) {
console.log("Data vai factory\n", JSON.stringify(data));
console.log("Loading finish.");
}).error(function (data, status, headers, config) {
});
};
});
app.directive("ajaxLoadingDirective", function ($uibModal) {
var modalInstance;
return {
restrict: 'EA', //E = element, A = attribute, C = class, M = comment
scope: true,
link: function (scope, elem, attrs) {
console.log("AjaxLoadingDirective.AjaxLoading:Progress");
scope.$on("AjaxLoading:Progress", function() {
modalInstance = $uibModal.open({
animation: true,
templateUrl: 'myModalContent.html'
});
});
return scope.$on("AjaxLoading:Finish", function() {
console.log("AjaxLoadingDirective.AjaxLoading:Finish");
if(modalInstance === undefined) return;
modalInstance.dismiss();
});
}
}
});
</script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div ng-controller="ModalDemoCtrl">
<script type="text/ng-template" id="myModalContent.html">
Loading data .......................
</script>
<button type="button" class="btn btn-default" ng-click="doAjax()">Execute Ajax</button>
<div ajax-loading-directive ></div>
</div>
</body>
</html>
人們已經建立了類似的東西。見http://codingsmackdown.tv/blog/2013/01/02/using-response-interceptors-to-show-and-hide-a-loading-widget/,http://codingsmackdown.tv/blog/2013/ 04/20/using-response-interceptors-to-show-and-hide-a-loading-widget-redux/ – Chandermani