在事件回调中更新模型时,更新模型属性对视图没有影响,有什么想法可以解决这个问题吗?
这是我的服务:
angular.service('Channel', function() {
var channel = null;
return {
init: function(channelId, clientId) {
var that = this;
channel = new goog.appengine.Channel(channelId);
var socket = channel.open();
socket.onmessage = function(msg) {
var args = eval(msg.data);
that.publish(args[0], args[1]);
};
}
};
});
在控制器中动态添加了publish()
函数。
控制器:
App.Controllers.ParticipantsController = function($xhr, $channel) {
var self = this;
self.participants = [];
// here publish function is added to service
mediator.installTo($channel);
// subscribe was also added with publish
$channel.subscribe('+p', function(name) {
self.add(name);
});
self.add = function(name) {
self.participants.push({ name: name });
}
};
App.Controllers.ParticipantsController.$inject = ['$xhr', 'Channel'];
查看:
<div ng:controller="App.Controllers.ParticipantsController">
<ul>
<li ng:repeat="participant in participants"><label ng:bind="participant.name"></label></li>
</ul>
<button ng:click="add('test')">add</button>
</div>
所以问题是,单击按钮可以正确地更新视图,但是当我收到来自Channel的消息时,甚至add()
函数也会被调用
发布于 2012-04-17 04:00:57
您缺少$scope.$apply()
。
无论何时从Angular世界之外接触到任何东西,都需要调用$apply
来通知Angular。这可能来自于:
在您的情况下,执行以下操作:
// inject $rootScope and do $apply on it
angular.service('Channel', function($rootScope) {
// ...
return {
init: function(channelId, clientId) {
// ...
socket.onmessage = function(msg) {
$rootScope.$apply(function() {
that.publish(args[0], args[1]);
});
};
}
};
});
https://stackoverflow.com/questions/10179488
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