使用twitteR的自动httr认证，提供对“批处理"中的交互式提示的响应.模式 [英] Automated httr authentication with twitteR , provide response to interactive prompt in "batch" mode

问题描述

我正在使用R包twitteR将项目发布到Twitter.我把所有东西都放进了一个函数中，并且一切正常.但是，我希望在不提示您响应的情况下运行该函数，而且我还没有弄清楚该怎么做.有什么建议吗?

I am using the R package twitteR to post items to Twitter. I put everything inside of a function and it works fine. However, I would like to run the function without being prompted for a response, and I haven't figured out how to do that. Any suggestions?

这是我功能的基本内容:

Here are the bare bones of my function:

doit <- function(<snip>) {
    <snip>
    # connect to Twitter
    setup_twitter_oauth(api_key, api_secret, access_token, access_token_secret)
    <snip>
    }

从命令行运行该功能时，系统会提示我进行交互式响应.

When I run the function from the command line, I am prompted for an interactive response.

[1] "Using direct authentication"
Use a local file to cache OAuth access credentials between R sessions?
1: Yes
2: No

Selection: 

当setup_twitter_oauth()函数不在函数外部时，我可以在脚本中直接提供此信息，方法是在下一行中输入我的响应，这与对其他用户输入函数(如readline()或scan( ).

I can provide this information directly in a script when the setup_twitter_oauth() function is outside of a function, by entering my response in the following line, much like can be done for other user input functions like readline() or scan().

setup_twitter_oauth(api_key, api_secret, access_token, access_token_secret)
1

但是，当setup_twitter_oauth()位于函数的内部时，我无法使用这种方法.

However, I haven't been able to get this approach to work when setup_twitter_oauth() is INSIDE of a function.

对于在不要求用户输入的情况下如何运行它的任何建议，我们将不胜感激.

I would appreciate any suggestions on how to get this to run without requiring user input.

=====

下面来自@NicE的答案可以解决问题.我将选项设置合并到我的函数中，如下所示:

The answer from @NicE below did the trick. I incorporated the options setting in my function as:

doit <- function(<snip>) {
    <snip>
    # connect to Twitter
    origop <- options("httr_oauth_cache")
    options(httr_oauth_cache=TRUE)
    setup_twitter_oauth(api_key, api_secret, access_token, access_token_secret)
    options(httr_oauth_cache=origop)
    <snip>
    }

推荐答案

您可以尝试将httr_oauth_cache选项设置为TRUE:

You can try setting the httr_oauth_cache option to TRUE:

options(httr_oauth_cache=T)

twitteR软件包使用httr软件包，在该软件包的Token手册页上，它们提供了有关缓存的提示:

The twitteR package uses the httr package, on the Token manual page for that package they give tips about caching:

OAuth tokens are cached on disk in a file called .httr-oauth 
saved in the current working directory. Caching is enabled if:

The session is interactive, and the user agrees to it, OR

The .httr-oauth file is already present, OR

getOption("httr_oauth_cache") is TRUE

You can suppress caching by setting the httr_oauth_cache option to FALSE.

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