不确定我是否正确这样做。我有两个控制器。一个人拉了所有帖子。另一个给了我垃圾桶里所有帖子的数量。它目前有效，但只有一种方式。如果我从垃圾桶中撤消帖子并将其放回群体中，则计数会更改以反映新号码，但如果我向垃圾箱发送帖子，则计数不会更新。
这是我的服务：
app.service('sharedProperties', function () {
});
这是我的第一个控制器:(此控制器提供所有帖子并具有垃圾功能）
app.controller('postsCtrl', function ($scope, $log, $http, $timeout, Data, $uibModal, sharedProperties) {
Data.get('posts').then(function(data){
$scope.posts = data.data;
$scope.currentPage = 1; //current page
$scope.filteredItems = $scope.posts.length; //Initially for no filter
$scope.totalItems = $scope.posts.length;
$scope.list_pages = [
{
id: '5',
name: '5'
}, {
id: '10',
name: '10'
}, {
id: '20',
name: '20'
}, {
id: '50',
name: '50'
}, {
id: '100',
name: '100'
}
];
$scope.maxSize = 5;
});
$scope.setPage = function(pageNo) {
$scope.currentPage = pageNo;
};
$scope.filter = function() {
$timeout(function() {
$scope.filteredItems = $scope.filtered.length;
}, 10);
};
$scope.sort_by = function(predicate) {
$scope.predicate = predicate;
$scope.reverse = !$scope.reverse;
};
$scope.changePostStatus = function(post){
post.approved = (post.approved=="1" ? "0" : "1");
Data.put("posts/"+post.id,{approved:post.approved}).then(function (result) {
Data.toast2(result);
});
};
$scope.changePostAnnounce = function(post){
post.announce = (post.announce=="1" ? "0" : "1");
Data.put("posts/"+post.id,{announce:post.announce}).then(function (result) {
Data.toast2(result);
});
};
$scope.trashPost = function(post){
if(confirm("Are you sure to remove the post")){
Data.delete("posts/"+post.id).then(function(result){
$scope.posts = _.without($scope.posts, _.findWhere($scope.posts, {id:post.id}));
$scope.totalItems = $scope.posts.length;
Data.toast(result);
});
}
};
$scope.open = function (p,size) {
var modalInstance = $uibModal.open({
templateUrl: 'views/postsEdit.html',
controller: 'postsEditCtrl',
size: size,
resolve: {
item: function () {
return p;
}
}
});
modalInstance.result.then(function(selectedObject) {
if(selectedObject.save == "insert"){
$scope.posts.push(selectedObject);
$scope.posts = $filter('orderBy')($scope.posts, 'id', 'reverse');
}else if(selectedObject.save == "update"){
p.title = selectedObject.title;
// p.price = selectedObject.price;
// p.stock = selectedObject.stock;
// p.packing = selectedObject.packing;
}
});
};
});
这是我的第二个控制器:(此控制器计算垃圾箱中的帖子）
app.controller('postsTrashCtrl', function ($scope, $log, $http, $timeout, Data, sharedProperties) {
Data.get('trash').then(function(data){
$scope.trash = data.data;
$scope.totalTrashItems = $scope.trash.length;
});
});
在控制器1中，trashPost函数是我尝试从控制器2更新totalTrashItems的地方
我知道这是我想念的小事。
更新
具有控制器和变量的HTML：
<div class="container">
<div class="row" align="center">
<div class="stats" ng-controller="postsTrashCtrl"><i class="fa fa-thumb-tack"></i> Total Posts (<span class="attendStat">{{ totalItems }}</span>)<span class="seperator"> | </span><i class="fa fa-trash-o"></i> <a href="#/trash" id="trashCan" class="trashCan">Trash</a> (<span class="attendStat">{{totalTrashItems}}</span>)</div>
</div>
答案 0 :(得分：1)
我看到你那里有空服务。
没有深入了解您当前的代码。对于此上下文，我的控制器间通信解决方案是在Post，Trash和UnTrash事件上 $ broadcast（＆＃34; customEventName＆＃34;）。
并且你的PostController和TrashPostController将使用 $ on（＆＃34; customEventName＆＃34;，function（）{}）订阅这些广播事件
使用一个PostTrackingService维护所有数据的发布和删除，甚至与服务器的通信。在这种情况下，如果需要通过发布和跟踪执行任何操作，您的控制器将简单地调用该服务。
我知道阅读有点冗长。我建议先看一下html，然后了解这些控制器是如何工作的，最后看一下如何定义服务。如果将此模式应用于代码。你的问题将得到解决。
这是代码。您还可以play with it on JSFiddle
<script src="https://code.angularjs.org/1.4.9/angular.min.js"></script>
<div ng-app="myApp">
<div ng-controller="PostController">
{{postCount}}
<button ng-click="post()">
Post
</button>
<button ng-click="trash()">
Trash
</button>
</div>
<div ng-controller="TrashController">
{{trashCount}}
<button ng-click="untrash()">
UnTrash
</button>
</div>
</div>
<script>
var app = angular.module('myApp', []);
//----------------- Service to track all post changes ---------------
app.factory('PostTrackingService', function($rootScope) {
var postCount = 10;
var trashCount = 3;
var _postTrackingService = {};
_postTrackingService.getPostCount = function(){ return postCount};
_postTrackingService.post = function(dataToPost){
//do something with dataToPost
postCount++;
//broadcast a post event
$rootScope.$broadcast("A custom POST event invented by me");
};
_postTrackingService.getTrashCount = function(){ return trashCount};
_postTrackingService.trash = function(postId){
//do something with postId
trashCount++;
postCount--;
//broadcast a trash event
$rootScope.$broadcast("A custom TRASH event invented by me");
};
_postTrackingService.untrash = function(postId){
//do something with postId
trashCount--;
postCount++;
//broadcast a trash event
$rootScope.$broadcast("A custom UNTRASH event invented by me");
};
return _postTrackingService;
});
//----------------- Post Controller ---------------
app.controller("PostController", ["PostTrackingService", "$scope", "$rootScope", function(PostTrackingService, $scope, $rootScope){
$scope.postCount = PostTrackingService.getPostCount();
$rootScope.$on("A custom POST event invented by me", function(){
$scope.postCount = PostTrackingService.getPostCount();
});
$rootScope.$on("A custom TRASH event invented by me", function(){
$scope.postCount = PostTrackingService.getPostCount();
});
$rootScope.$on("A custom UNTRASH event invented by me", function(){
$scope.postCount = PostTrackingService.getPostCount();
});
$scope.post = function(){
PostTrackingService.post("some data to post to server");
}
$scope.trash = function(){
PostTrackingService.trash("a post ID");
}
}]);
//----------------- Trash Controller ---------------
app.controller("TrashController", ["PostTrackingService", "$scope", "$rootScope", function(PostTrackingService, $scope, $rootScope){
$scope.trashCount = PostTrackingService.getTrashCount();
$rootScope.$on("A custom TRASH event invented by me", function(){
$scope.trashCount = PostTrackingService.getTrashCount();
});
$rootScope.$on("A custom UNTRASH event invented by me", function(){
$scope.trashCount = PostTrackingService.getTrashCount();
});
$scope.untrash = function(){
PostTrackingService.untrash("some post id");
//make any calls to inform server
}
}]);
</script>