Bug report for trillium-method-override: Not converting from method field in request body

[jalcine]

Describe the bug
While using htmx.org, namely hx-post with <input type="hidden" name="_method" value="put"> in a form, I noticed that the request wasn't being translated into an PUT request on the server side.

To Reproduce
Reproduction of this could work by copying one of the tests at trillium-rs/trillium#main/method-override/tests/tests.rs:L16-L29 but instead of checking the query string , putting the test body as the request body, like:

assert_ok!(post("/").with_request_body("_method=put").on(&app), "it was a PUT");

This way, it'll show that the use of only query string extraction wouldn't be enough. However, it looks like reading the body of the request will mutate the connection itself at https://docs.rs/trillium/latest/src/trillium/conn.rs.html#257-274. Perhaps an updated test will show otherwise.

Expected behavior
Proper conversion of a POST request with a hint to the expected HTTP Verb.

Additional context
I figure that the code of method-override is a bit older than the tests and perhaps led to this not being covered.

(Originally published at: https://jacky.wtf/2022/4/W1/W1YTNu6QaaLQ33o0zcbWFhRr)

[jbr]

Hey, sorry for the delay on this!

To make sure I understand your suggestion, the goal is to parse the body and check for a given attribute that modifies the http method along the lines of trillium-method-override, which currently only uses a url param? Let me know if I misunderstood the intent

I don't think there's currently a good way to provide a library that does this that can support arbitrary body encodings (json, xml, x-www-urlecoded, etc). I think this is the sort of thing that would be best to handle in an application, by parsing the body from whatever format and putting that into conn state, as well as modifying the method.

[jalcine]

Hm, that makes sense! I think I can add this on my side, but I'd need to figure out how to change the method while a request is being processed. It looks simple enough to do reading https://docs.trillium.rs/src/trillium_method_override/lib.rs.html#94-108

(Originally published at: https://jacky.wtf/2022/5/r-Er)

[jbr]

Yep, it's really just conn.inner_mut().set_method(method); (using trillium_http::Conn::set_method) — And Method has a try_from(&str)

[jbr]

I'm going to tentatively close this because it seems like this needs to be application-specific, since there are any number of body encodings that the trillium-method-override library doesn't/shouldn't know about