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我正在使用 Koala gem,我想确保应用程序是由用户安装的。首先,我尝试从我的数据库中验证 Facebook id。它对我有用,但如果用户从用户的 Facebook 帐户设置中删除应用程序,它会在一种情况下失败。为什么?
结帐graph.get_connections('me','permissions')。已经有一个“已安装”字段。
graph.get_connections('me','permissions')