blocks|key|1879606|text|请尝试使用button或input而不是span。因为disabled不工作在span中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1879607|<button+id="{{+post._id+%2B+'upvote'+}}"+class="glyphicon+glyphicon-thumbs-up"+ng-click="incrementUpvotes(post)"></button>|code-block|syntax|javascript|1879608|然后，在“向上投票”操作之后，将“向上投票”的disabled属性设置为“button+true”。|1879609|o.upvote+=+function(post){
++++return+$http.put('/posts/'+%2B+post._id+%2B+'/upvote',+null,+{
++++++++headers:+{Authorization:+'Bearer+'%2Bauth.getToken()}
++++}).success(function(data){
++++++++post.upvotes+%2B=+1;
++++++++angular.element(document.getElementById(post._id+%2B+'upvote'+))[0].disabled+=+true;
++++});
};|1879610|entityMap^0|5|6|C|5|K|4|R|8|13|4|0|0|N|8|11|6|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|C]|$9|15|A|16|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|P|$]]

Please try to use <code>button</code> or <code>input</code> instead of <code>span</code>. Because <code>disabled</code> does not work in a <code>span</code>.

<pre><code>&lt;button id="{{ post._id + 'upvote' }}" class="glyphicon glyphicon-thumbs-up" ng-click="incrementUpvotes(post)"&gt;&lt;/button&gt;
</code></pre>

Then set <code>disabled</code> attribute of your upvote <code>button</code> true after the upvote action.

<pre><code>o.upvote = function(post){
 return $http.put('/posts/' + post._id + '/upvote', null, {
 headers: {Authorization: 'Bearer '+auth.getToken()}
 }).success(function(data){
 post.upvotes += 1;
 angular.element(document.getElementById(post._id + 'upvote' ))[0].disabled = true;
 });
};
</code></pre>

blocks|key|1119023|text|在模板中，当您迭代这些帖子时，为每个帖子设置一个标志，以标识它是否已被更新。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1119024|在upvote函数中，将该标志标记为true，并在ng-disabled指令中使用它，如下所示：|offset|length|style|CODE|1119025|ng-disabled={{post.isUpvoted}}|code-block|syntax|javascript|1119026|entityMap^0|0|1|6|P|B|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

In the template when you are iterating the posts, have a flag for each post which identifies if it has been upvoted or not.

In the <code>upvote</code> function mark that flag as true and use it in the <code>ng-disabled</code> directive like this :

<pre><code>ng-disabled={{post.isUpvoted}}
</code></pre>

blocks|key|2172789|text|这更像是一个架构问题，而不是javascript/angularjs问题。有很多方法可以做到这一点。但这样做的目的是存储在数据库中，并保存向上表决信息，否则用户只需刷新页面并再次更新。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2172790|最直接的解决方案是:您必须将您的投票信息存储在后端的用户级别。当您查询用户信息时，存储如下所示的向上投票的帖子列表：|2172791|myDataService+应该如下所示：|offset|length|style|BOLD|CODE|2172792|angular.module("app",+[]).service("myDataService",+["$http","$q","$rootScope",+function+myDataService($http,+$q,+$rootScope)+{
++++var+myDataService+=+this;

++++myDataService.getPostsUpvoted+=+function(userId)+{
++++++++var+defer+=+$q.defer();

++++++++//here+you+format+your+payload+to+deliver+userId+to+the+api+backend
++++++++var+payload+=+{+userId:+userId+};

++++++++//your+api+backend+'getpostsupvoted'+should+accept+a+userId,+then+in+return+it+should
++++++++//deliver+a+list+of+posts+upvoted+by+that+user
++++++++$http.post("/api/getpostsupvoted",+payload).then(function+(data,+status,+headers,+config)+{
++++++++++++//call+success
++++++++++++defer.resolve(data);
++++++++},+function(data,+status,+headers,+config)+{
++++++++++++//an+error+occurred
++++++++++++defer.reject(data);
++++++++});

++++++++return+defer.promise;
++++}

++++return+myDataService;
})];|code-block|syntax|javascript|2172793|然后，您将在控制器中使用该服务。|2172794|//inject+scope+and+myDataservice+into+controller
angular.module("app",+[]).controller("MainCtrl",+["$scope",+"myDataService",+function($scope,+myDataService)+{

++++//create+a+new+array+to+hold+a+list+of+upvotes
++++$scope.user.upVoted+=+[];
++++myDataService.getPostsUpvoted($scope.user.id).then(function(data)+{
++++++++//set+upvoted+array+to+data
++++++++$scope.user.upVoted+=+data;
++++},+function(error)+{
++++++++//blah+an+error+occurred
++++});

})];|2172795|在您的控制器中，提供一个函数来检查post是否已经被选中。|2172796|$scope.IsUpvotedAlready+=+function(postId)+{

++++if($scope.user.upVoted.indexOf(postId)+>+-1)
++++++++return+true;

++++return+false;

}|2172797|您还必须将post._id推到upVoted数组，并将其保存在那里。|2172798|$scope.incrementUpvotes+=+function(post)+{

++++//check+if+it's+already+been+upvoted,+then+do+nothing
++++if($scope.user.upVotes.indexOf(post._id)+>+-1)
++++++++return;

++++posts.upvote(post);

++++$scope.user.upVoted.push(post._id);
};|2172799|然后，在显示post的ng-重复指令中，检查向上的列表是否包含post._id。|2172800|<div+ng-repeat="post+in+posts">
++++<div+ng-if="IsUpvotedAlready(post._id)">
++++++++
++++</div>
++++{{+post+}}
</div>|2172801|entityMap^0|0|0|0|D|E|7|0|D|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|18|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|19|8|@$F|1A|G|1B|H|I]|$F|1C|G|1D|H|I]|$F|1E|G|1F|H|J]]|9|@]|A|$]]|$1|K|3|L|5|M|7|1G|8|@]|9|@]|A|$N|O]]|$1|P|3|Q|5|6|7|1H|8|@]|9|@]|A|$]]|$1|R|3|S|5|M|7|1I|8|@]|9|@]|A|$N|O]]|$1|T|3|U|5|6|7|1J|8|@]|9|@]|A|$]]|$1|V|3|W|5|M|7|1K|8|@]|9|@]|A|$N|O]]|$1|X|3|Y|5|6|7|1L|8|@]|9|@]|A|$]]|$1|Z|3|10|5|M|7|1M|8|@]|9|@]|A|$N|O]]|$1|11|3|12|5|6|7|1N|8|@]|9|@]|A|$]]|$1|13|3|14|5|M|7|1O|8|@]|9|@]|A|$N|O]]|$1|15|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]]|16|$]]

This is more of an architectural question than it is javascript/angularjs question. There are many ways to do this. But the idea is to store in database and persist upvote information, otherwise users can just refresh the page and upvote again.

Most direct solution is: You have to store your vote information on the backend at the user level. When you query the user information, store a list of up-voted posts like this:

<code>myDataService</code> should look like this:

<pre><code>angular.module("app", []).service("myDataService", ["$http","$q","$rootScope", function myDataService($http, $q, $rootScope) {
 var myDataService = this;

 myDataService.getPostsUpvoted = function(userId) {
 var defer = $q.defer();

 //here you format your payload to deliver userId to the api backend
 var payload = { userId: userId };

 //your api backend 'getpostsupvoted' should accept a userId, then in return it should
 //deliver a list of posts upvoted by that user
 $http.post("/api/getpostsupvoted", payload).then(function (data, status, headers, config) {
 //call success
 defer.resolve(data);
 }, function(data, status, headers, config) {
 //an error occurred
 defer.reject(data);
 });

 return defer.promise;
 }

 return myDataService;
})];
</code></pre>

Then, this is how you'll use the service in your controller.

<pre><code>//inject scope and myDataservice into controller
angular.module("app", []).controller("MainCtrl", ["$scope", "myDataService", function($scope, myDataService) {

 //create a new array to hold a list of upvotes
 $scope.user.upVoted = [];
 myDataService.getPostsUpvoted($scope.user.id).then(function(data) {
 //set upvoted array to data
 $scope.user.upVoted = data;
 }, function(error) {
 //blah an error occurred
 });

})];
</code></pre>

In your controller, provide a function to check if a post has already been upvoted.

<pre><code>$scope.IsUpvotedAlready = function(postId) {

 if($scope.user.upVoted.indexOf(postId) &gt; -1)
 return true;

 return false;

}
</code></pre>

You'll also have to push the post._id to the upVoted array and keep it there.

<pre><code>$scope.incrementUpvotes = function(post) {

 //check if it's already been upvoted, then do nothing
 if($scope.user.upVotes.indexOf(post._id) &gt; -1)
 return;

 posts.upvote(post);

 $scope.user.upVoted.push(post._id);
};
</code></pre>

Then, in your ng-repeat directive where you display the post, check if the list of upvotes contain the post._id.

<pre><code>&lt;div ng-repeat="post in posts"&gt;
 &lt;div ng-if="IsUpvotedAlready(post._id)"&gt;
 &lt;!-- display something since already upvoted !--&gt;
 &lt;/div&gt;
 {{ post }}
&lt;/div&gt;
</code></pre>

To begin sorry for my English.
 I made some search about this problem, but nothing works for me.
 My problem is simple : 
 I have an upvote system, where users can upvote (like Stackoverflow). But the problem is that users can upvote multiple times (and it's not very well ..). 
 I tried to make a button with ng-disabled, but if i do this, users can only vote one time for all the posts (I mean if they upvoted "Post A", they can't upvote "Post B").
 Here is my controller function :

<pre><code>$scope.incrementUpvotes = function(post) {
 posts.upvote(post);
 };
</code></pre>

Here is my factory function :

<pre><code>o.upvote = function(post){
 return $http.put('/posts/' + post._id + '/upvote', null, {
 headers: {Authorization: 'Bearer '+auth.getToken()}
 }).success(function(data){
 post.upvotes += 1;
 });
};
</code></pre>

And here the html :

<pre><code>&lt;span class="glyphicon glyphicon-thumbs-up" ng-click="incrementUpvotes(post)"&gt;&lt;/span&gt;
</code></pre>

If someone could help me it would be great ! Thanks in advance !

prevent multiple upvote Angularjs

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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开始为我的英语道歉。我对这个问题做了一些调查，但对我没有任何用处。我的问题很简单：我有一个向上投票系统，用户可以在这里向上投票(比如Stackoverflow)。但问题是用户可以多次投票(而且不是很好.)。我试着制作一个禁用ng的按钮，但是如果我这样做，用户只能为所有的帖子投票一次(我的意思是，如果他们投了"Post ...

问防止多投安古拉杰
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