我正在建立一个论坛,而我正处于观点的一步。我有这个(简化的)代码:
//Setting Views
//Adding Them..
$scope.views = $firebaseObject(refService.ref().child("Topics"))
refService.ref().child("Topics").once("value", function(snapshot) {
snapshot.forEach(function(childSnapshot) {
var key = childSnapshot.key();
var childData = childSnapshot.val();
if(childData.DateCreated == $stateParams.DATE && childData.Email == $stateParams.EMAIL){
refService.ref().child("Topics").child(childData.pushKey).child("Views").child(currentAuth.uid).set({
Views : true
})
}
})
})
//Viewing them
$scope.viewableView = $firebaseObject(refService.ref().child("Topics"))
正如您所看到的,添加视图非常容易。我做得很对。问题在于显示视图的数量,我必须使用AngularFire的$firebaseObject
或$firebaseArray
...这是数据库中的结构:
{
"Topics" : {
"-KG9rDNLZksJDiLfAXwH" : {
"Avatar" : "http://cs624223.vk.me/v624223037/2b1bb/GRTKddkmXiw.jpg",
"DateCreated" : 1461544873669,
"Email" : "abogale2@gmail.com",
"Title" : "Check",
"UID" : "3caf2136-7a2d-4ae4-a4a9-119f2b08133c",
"Username" : "BruhBrhu",
"Value" : "Check",
"Views" : {
"3caf2136-7a2d-4ae4-a4a9-119f2b08133c" : {
"Views" : true
}
},
"pushKey" : "-KG9rDNLZksJDiLfAXwH"
}
},
"UserAuthInfo" : {
"3caf2136-7a2d-4ae4-a4a9-119f2b08133c" : {
"BronzeBadge" : 0,
"Description" : "Just a wierd 15 year old coder...",
"Email" : "abogale2@gmail.com",
"GoldBadge" : 0,
"Image" : "http://cs624223.vk.me/v624223037/2b1bb/GRTKddkmXiw.jpg",
"Moderator" : false,
"Password" : "KfUcQ1yedOi1gEnGP6i1KQ==",
"PlatinumBadge" : 0,
"SilverBadge" : 0,
"UID" : "3caf2136-7a2d-4ae4-a4a9-119f2b08133c",
"Username" : "BruhBrhu"
}
}
}
正如您所看到的,我使用push()
来获取主题。我现在关注的是如何查看主题!请帮忙!我无法想到一个"算法"做到了!
请注意,所有主题都有唯一的ID。我必须得到用户所在的特定ID。
答案 0 :(得分:1)
这对我有用:
refService.ref().child("Topics").once("value", function(snapshot) {
snapshot.forEach(function(childSnapshot) {
var key = childSnapshot.key();
var childData = childSnapshot.val();
if(childData.DateCreated == $stateParams.DATE && childData.Email == $stateParams.EMAIL){
refService.ref().child("Topics").child(childData.pushKey).child("Views").on("value", function(snapshot){
console.log(snapshot.numChildren())
$scope.countViews = snapshot.numChildren();
})
}
})
})
我不知道怎么但是以某种方式$ scope.countViews,变成了与我的HTML绑定的三种方式,所以它实际上显示了!
答案 1 :(得分:0)
您正在将键嵌套在对象Firebase documentation explicitly recommends against。
中但是一旦你意识到你还可以在范围中添加方法,它就可以工作:
var app = angular.module('app', ['firebase']);
app.constant('FB_URL', 'https://yours.firebaseio.com/');
app.controller('MainCtrl', function(FB_URL, $scope, $firebaseArray, $firebaseObject) {
var ref = new Firebase(FB_URL);
$scope.topics = $firebaseArray(ref.child('Topics'));
$scope.getCount = function(obj) {
return Object.keys(obj).length;
};
});
观点:
<body ng-controller='MainCtrl'>
<ol><li ng-repeat='topic in topics'>{{topic.Title}} - {{topic.Username}} - {{getCount(topic.Views)}}</li></ol>
</body>