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Michael Lazar lazar.michael22 at gmail.com
Mon May 17 17:49:43 BST 2021
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Hi all,
I have a question on a common design pattern in gemini. Say we havea guestbook, message board, etc. that accepts user comments via aninput query. A normal session with a client might look like this:
C: /guestbookS: 20 text/gemini (display the guestbook page) C: /guestbook/inputS: 10 enter your message C: /guestbook/input?hello%20worldS: 30 /guestbook (submit the user's message and redirect) C: /guestbookS: 20 text/gemini (display the guestbook page)``` Now, what should happen at this point when the user clicks the"back" button in their client? A. The client resubmits "/guestbook/input?hello%20world". This is not desired because it will result in double posting the message. This same problem is solved on the web using the Post/Redirect/Get pattern [1]. I suppose the gemini equivalent would be "don't store requests that return 3x in the client's history". With this rule, queries like GUS searches would still be cached because "gemini://geminispace.info/search?hello" returns a 20 response. B. The client re-prompts the user with "enter your message". I've seen a few (most?) clients do this and it's a pretty jarring experience as a user, because I did not click on a link first to prime the input prompt. IMO we should also make a rule "don't store requests that return a 1x in the client's history". There's no web equivalent for this that I could find. C. The client loads "/", which is the latest cached request before the current page. This seems like the desired behavior to me. Thoughts? - Michael [1] https://en.wikipedia.org/wiki/Post/Redirect/Get