Feature: Add setting to append ref parameter to links in feeds

[GiovanH]

This is a feature I'm experimenting with for personal use, as it's useful for analytics purposes to see if people are using the rss feeds.

• Ensured tests pass and (if applicable) updated functional test output
• Conformed to code style guidelines by running appropriate linting tools
• Added tests for changed code
• Updated documentation for changed code

This is more of a proposal at this stage. Is this something people would be interested in?

[GiovanH]

Updated with documentation.

[GiovanH]

@justinmayer Is there any further work needed here or is this ready to merge?

[justinmayer]

Hi @GiovanH. My apologies for the delay in reviewing. I've looked at this several times, but something always felt… not quite right… but I could never put my finger on what didn’t feel right.

I think I figured it out:

1. The rel attribute is for use within HTML documents. I don't think I have ever seen a ?rel=[…] URL parameter, and I can’t find any documentation about such a parameter anywhere on the Internet. I have, on the other hand, seen ?ref=[…] URL parameters used to indicating referrer information. Perhaps you meant ref and not rel? If so, perhaps change the URL parameter, and also change the setting name to FEED_APPEND_REFERRER?
2. For the parameter value, I suggest using the generic feed instead of rss, as a feed can be in either Atom or RSS format.

If I am wrong on any of the above counts, by all means feel free to point me to information to the contrary! 😊

[GiovanH]

I agree with you on both counts.

[justinmayer]

Thank you for the feature contribution, @GiovanH! ✨