javascript - 在javascript中获取应用程序用户

Question

我正在尝试在 javascript sdk 中获取应用程序用户。为什么这不起作用？

var q = FB.Data.query('SELECT uid FROM user WHERE uid IN '
            + '(SELECT uid2 FROM friend WHERE uid1 = me()) AND is_app_user = 1');

q.wait(function(resp) {
        console.log(resp);
    }
);

返回[]

然而这很好用:

var q = FB.Data.query('SELECT uid2 FROM friend WHERE uid1 = me()');
q.wait(function(resp) {
        var l = [];
        for (var i in resp) {
            l.push(resp[i].uid2)
        }
        var fql = 'SELECT uid FROM user WHERE uid IN (' + l.join(',') + ') and is_app_user = 1';
        var q1 = FB.Data.query(fql);
        q1.wait(function(resp) {
            console.log(resp);
        });
    }
);

第二个语句的问题是将所有 friend 加载到浏览器中，它又发出一个请求。为什么第一个语句不起作用？

Answer 1

尝试将 is_app_user 视为 bool 值:(仅使用 fql 对我有用)

var q = FB.Data.query('SELECT uid FROM user WHERE uid IN ' + '(SELECT uid2 FROM friend WHERE uid1 = me()) AND is_app_user');