Javascript 控制器之间的角度服务
我有一个加载时为空的服务:Javascript 控制器之间的角度服务,javascript,angularjs,angular-services,angular-controller,Javascript,Angularjs,Angular Services,Angular Controller,我有一个加载时为空的服务: app.factory("bookmark",function(){ var bookmark = {}; return bookmark; }); 我有一个控制器,它设置服务的值,并重定向到第二个控制器,在那里我尝试访问空的服务值 控制器A: app.controller('bookmarksController', function($scope, localStorageService, bookmark) { // localStorag
app.factory("bookmark",function(){
var bookmark = {};
return bookmark;
});
我有一个控制器,它设置服务的值,并重定向到第二个控制器,在那里我尝试访问空的服务值
控制器A:
app.controller('bookmarksController', function($scope, localStorageService, bookmark) {
// localStorageService.clearAll();
$scope.bookmarks = localStorageService.keys();
$scope.setBookmarkServ = function (key){
console.log('bookmark service set');
bookmark = key;
console.log(bookmark);
}
$scope.go2bookmark = function (key){
console.log('go2bookmark called');
var obj = localStorageService.get(key);
return obj.link;
}
});
模板A:
<script type="text/ng-template" id="bookmarks">
<div ng-controller="bookmarksController">
<hr style="clear:both;opacity:0;" />
<div class="logo"></div>
<h1>Bookmarks</h1>
<div ng-repeat="mark in bookmarks" class="col-xs-12 col-sm-6 col-md-3">
<a ng-click="setBookmarkServ(mark)" ng-init="theLink = go2bookmark(mark)" href="#{{theLink}}" class="thumbnail alert-info" style="height:150px;">
<div class="caption">
<h3>{{ mark }}</h3>
{{theLink}}
</div>
</a>
</div>
</div>
</script>
而不是
$scope.bookmarks = localStorageService.keys();
将书签保存在
$rootScope.bookmarks = localStorageService.keys();
因此,它们将在整个应用程序中共享
app.factory("bookmark",function(){
var _bookmark = {};
var setBookMark = function(key){
_bookmark = key;
}
var getBookMark = function(){
return _bookmark;
}
return {
GetBookMark = getBookMark,
SetBookMark = setBookMark
};
});
现在您可以使用此服务设置和获取书签
在控制器A中
app.controller('bookmarksController', function($scope, localStorageService, bookmark) {
bookmark.SetBookMark(localStorageService.keys(););
}
并在控制器B中获取书签
app.controller('baselistController', ['$scope', '$routeParams', '$route', '$http', 'customview', '$location', '$uibModal', '$cacheFactory', '$templateCache', 'columnselector', '$interval', '$rootScope', 'globalVarService', '$window', '$controller', '$timeout', 'localStorageService', 'bookmark',
function ($scope, $routeParams, $route, $http, customview, $location, $uibModal, $cacheFactory, $templateCache, columnselector, $interval, $rootScope, globalVarService, $window, $controller, $timeout, localStorageService, bookmark) {
console.log(bookmark.GetBookMark());
}
@阿比拉什给出了解决方案,让我解释一下原因 您需要理解通过引用传递的
和通过值传递的之间的区别:
您定义了一个服务书签
,实际上它类似于:
您将服务书签注入控制器。在本例中,书签
是一个参考。当你在做bookmark=key代码>,您丢失了对内存中真实对象的引用:
这就是为什么您的服务不能在控制器之间共享。因为你的修改实际上不会产生影响
解决方案:请参阅@Abhilash的答案。书签服务是!=$范围。书签$作用域不会持久化路由更改(据我所知),我需要使用service/factory…每次调用bookmark service时,它都会创建一个新的bookmark var,您可以这样尝试:if(!bookmark){bookmark={};}return bookmark;使用$rootScope是一种糟糕的做法。
app.controller('baselistController', ['$scope', '$routeParams', '$route', '$http', 'customview', '$location', '$uibModal', '$cacheFactory', '$templateCache', 'columnselector', '$interval', '$rootScope', 'globalVarService', '$window', '$controller', '$timeout', 'localStorageService', 'bookmark',
function ($scope, $routeParams, $route, $http, customview, $location, $uibModal, $cacheFactory, $templateCache, columnselector, $interval, $rootScope, globalVarService, $window, $controller, $timeout, localStorageService, bookmark) {
console.log(bookmark.GetBookMark());
}