我正在使用Firebase(AngularFire)和他们的PHP API,我正在构建在线状态系统。 https://www.firebase.com/docs/managing-presence.html
我开始以很多参考文献结束,这感觉不对。
firebase引用应该存储在vanilla vars还是对象中?
controllers.controller('SocialCtrl', function($scope, angularFire) {
var onlineRef = new Firebase($scope.main.firebaseUrl + "/users/" + $scope.main.userId + "/online");
$scope.online = {};
angularFire(onlineRef, $scope, "online");
var usersRef = new Firebase($scope.main.firebaseUrl + "/users");
$scope.users = {};
angularFire(usersRef, $scope, "users");
var productRef = new Firebase($scope.main.firebaseUrl + "/products/" + $scope.main.serieId);
$scope.product = {};
angularFire(productRef, $scope, "product");
var connectedRef = new Firebase($scope.main.firebaseUrl + "/.info/connected");
connectedRef.on("value", function(snap) {
if (snap.val() === true) {
onlineRef.onDisconnect().set(Firebase.ServerValue.TIMESTAMP);
onlineRef.set(true);
}
});
});
OR
$scope.fire = {
refs: {
online: new Firebase($scope.main.firebaseUrl + "/users/" + $scope.main.userId + "/online"),
users: new Firebase($scope.main.firebaseUrl + "/users"),
product: new Firebase($scope.main.firebaseUrl + "/products/" + $scope.main.serieId),
connected: new Firebase($scope.main.firebaseUrl + "/.info/connected")
}
};
angularFire($scope.fire.refs.online, $scope, "fire.online");
angularFire($scope.fire.refs.users, $scope, "fire.users");
angularFire($scope.fire.refs.product, $scope, "fire.product");
angularFire($scope.fire.refs.connected, $scope, "fire.connected");
$scope.fire.refs.connected.on("value", function(snap) {
if (snap.val() === true) {
$scope.fire.refs.online.onDisconnect().set(Firebase.ServerValue.TIMESTAMP);
$scope.fire.refs.online.set(true);
}
});
我并不是要将此作为最佳实践问题。 Firebase是如此新颖,我不想破坏我可能还没有意识到的任何东西。
答案 0 :(得分:9)
创建多个Firebase引用或angularFire对象绝对没有问题(事实上鼓励这样做)。您可以使用child
函数稍微清理代码:
angular.module("myapp", ["firebase"]).
value("URL", "https://my-firebase.firebaseio.com/").
controller("SocialCtrl", function($scope, URL, angularFire) {
var ref = new Firebase(URL);
angularFire(ref.child("users"), $scope, "users");
angularFire(ref.child("users/" + $scope.main.userId + "/online", $scope, "online");
angularFire(ref.child("products/" + $scope.main.serieId, $scope, "products");
ref.child(".info/connected").on("value", ...);
}