我想写一个工厂，两个来源获取数据，并使用一个源扩大在其他对象中的数据。

I'm trying to write a factory that gets data from two sources and uses one source to expand the data in the other object.

app.factory('information', ['$http', '$q', 'players', 'matches', function($http, $q, players, matches) {
    return {
        // Returns all matches and players including extra parsing
        get: function() {
            return players.get().success(function(data) {
                players = data;

                matches.get().success(function(data) {
                    matches = data;

                    for ( match in matches ) {
                        matches[match].a_player1 = players.filter(function(player) { return player.username == matches[match].a_player1 })[0];
                        matches[match].a_player2 = players.filter(function(player) { return player.username == matches[match].a_player2 })[0];
                        matches[match].b_player1 = players.filter(function(player) { return player.username == matches[match].b_player1 })[0];
                        matches[match].b_player2 = players.filter(function(player) { return player.username == matches[match].b_player2 })[0];
                        console.log(matches)
                    }

                    return matches;
                });
            });
        },
    }
}]);

两者 matches.get（）和 players.get（）简单 GET 请求给一个API，像这样：

Both matches.get() and players.get() are simple GETrequests to an API like so:

app.factory('players', function($http) {
    return {
        get: function() {
            return $http({
                method: 'GET',
                url: '/players',
            });
        },
    }
});

不过，虽然我想它返回上述code（当然）返回玩家对象匹配后，它就会用玩家组合对象对象。

But the above code (of course) returns the players object while I want it to return the matches object after it gets combined with the players object.

这是如何做到这一点任何提示？

Any tips on how to do this?

推荐答案

这功能将不会返回任何事情，因为你不能直接从异步操作返回一个值，要么返回的承诺或使用回调。但我认为就是你要找什么 $ q.all ：

That function won't return anything since you can't directly return a value from an async operation, either return the promise or use a callback. But I think what you're looking for is $q.all:

return {
        // Returns all matches and players including extra parsing
        getEverything: function() {

        var getPlayers= $http({
            method: 'GET',
            url: '/players',
        });
        var getMatches= $http({
            method: 'GET',
            url: '/matches',
        });

           return $q.all([getPlayers,getMatches]);
        }
}

用法：

getEverything().then(function(data){
   var players=data[0].data;
   var matches=data[1].data;
})

编辑：

无关，而是移动这个早在工厂：

Irrelevant, but to move this back in the factory:

getEverything: function() {
            var getPlayers= $http({
                method: 'GET',
                url: '/players',
            });
            var getMatches= $http({
                method: 'GET',
                url: '/matches',
            });
            return $q.all([getPlayers,getMatches]);
},
getEverythingMapped:function(){
 var deferred = $q.defer();
 this.getEverything().then(function(data){
       var players=data[0].data;
       var matches=data[1].data;
//do as many loops on either result set as you like
                for ( match in matches ) {
                    matches[match].a_player1 = players.filter(function(player) { return   player.username == matches[match].a_player1 })[0];
                    matches[match].a_player2 = players.filter(function(player) { return player.username == matches[match].a_player2 })[0];
                    matches[match].b_player1 = players.filter(function(player) { return player.username == matches[match].b_player1 })[0];
                    matches[match].b_player2 = players.filter(function(player) { return player.username == matches[match].b_player2 })[0];
                    console.log(matches)
//use of a promise here allows us top use this method using -then, we need to so this since we're
//waiting for the result of an async server call before we can loop through players and matches
                     deferred.resolve(matches);
                }


 }
}

现在你可以使用这样的上述方法在你的控制器：

Now you would use the above method like this in your controller:

information.getEverythingMapped().then(function(matches){
 console.log(matches);
})