是否可以订阅用户在线对话的实时更新？ [英] Is it possible to subscribe to real-time updates for user online_presence?

问题描述

我的应用程序有搜索功能，可以根据各种过滤条件找到用户。

My app has a search where you can find users based on various filters.

我最近添加了一个指示器，以便您可以看到用户是否在线。我通过获取user_online_presence权限来完成此工作，然后在结果被过滤之后，与我在数据库中存储的用户access_token进行了一个FQL请求。

I recently added an indicator so you could see whether or not a user was online. I made this work by getting the user_online_presence permission, then after the results were filtered, making an FQL request with the users access_token, which I have stored in my database.

现在，我想要这样做，所以我可以根据用户是否登录过滤搜索。所以我需要让每个用户的在线状态存储在我的数据库中。

Now, I want to make it so I can actually filter the search based on whether or not a user is signed in. So somehow, I need to have each user's online presence stored in my database.

这似乎是什么实时更新，但Facebook不列出在线对话作为我可以订阅的东西。

This seems to be what real-time updates are for, but Facebook doesn't list online_presence as something I can subscribe to.

在 https：// developers.facebook.com/docs/reference/api/realtime/ ，他们说：
您可以订阅除验证之外的所有User对象属性。

On https://developers.facebook.com/docs/reference/api/realtime/ , they say: "You can subscribe to all of the User object properties except verified."

但是，online_presence未列为用户字段：
https://developers.facebook.com/docs/reference/api/user/

But online_presence isn't listed as a User field: https://developers.facebook.com/docs/reference/api/user/

有没有人尝试过这个？

推荐答案

绝对是用户表的字段或下面的查询不起作用。

It most definitely is a field of the user table or the below query would not work.

SELECT uid, name, pic_square, online_presence FROM user

，其唯一列在：
https://developers.facebook.com / docs / reference / fql / user /

而不是：
https://developers.facebook.com/docs/reference/api/user/

当面对这种问题时，我通常会通过阅读两个文档的笔记来阅读。

When faced with this kind of question, I usually resort to reading through the notes on both documentations.

然后，我发现：您可以缓存这些数据，并在任何字段上订阅实时更新，这些字段也是相应Graph API版本的字段。 - Facebook

I then found this: "You can cache this data and subscribe to real time updates on any of its fields which are also fields in the corresponding Graph API version." - Facebook

所以基本上，他们说它不会工作，除非这两个环节都存在。

So basically, they're saying that it wont work unless the field exists in both links.

然后我会试试这个问题的答案，我发现：

I would then instead try out the answer in this Question that I found:

Facebook API实时好友的在线状态更新

我希望至少澄清事情有点为你祝你好运！

I hope this at least clarified things a bit for you. Best of luck!

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