Access HTTP POST request body

[Nikolay Manolov]

Hello,

I'm a newcomer to nitrogen and I've been fiddling with it. I have some javascript code that issues an AJAX Post. The body of the Post request contains some plain text data.
In the module that handles the request I have:

case wf_context:request_method() of
    get -> handle_get();
    post -> handle_post();
    _ -> wf:status_code(405)
end

handle_post() ->
    Body = wf:request_body(),
    io:format("Request Body: ~p~n", [R]),
    ok.

What i get is:

Request Body: <<>>

I saw another question asked 5 yeas back on the same topic and no conclusion was reached there. I tried

 Body = wf_context:request_bridge(),
 Body:request_body()

but to no avail.
Just for the record the request is correctly send from the UI and received from the backend.

[Jesse Gumm]

Hi Nikolay,

Thank you for posting this. It appears to be a bug in simple_bridge's
request_body call for cowboy, as this problem does not present itself
for the other webservers (mochiweb, yaws, inets, and webmachine).

For now, I'd recommend switching your app temporarily to one of the
other servers (mochiweb or yaws ideally), and after I fix this, you
can switch back to cowboy.

Thanks, I'll get this taken care of this week,

-Jesse

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--
Jesse Gumm
Owner, Sigma Star Systems
414.940.4866 || sigma-star.com || @jessegumm

[Jesse Gumm]

Oh, and switching to a different backend simply means:

1) Updating rebar.config to use the dependencies for the webserver
found in the .deps files here
(https://github.com/nitrogen/nitrogen/tree/master/rel/overlay)

then

2) Updating etc/simple_bridge.config's backend option to the chosen webserver

and finally,

3) running `make` from the root of your project.

-Jesse

[Nikolay Manolov]

OK, I'll be sure to follow your advice. Thank you for the quick response.

[Jesse Gumm]

Alrighty Nikolay,

I've updated simple_bridge to properly support the request_body for
cowboy. If you switch the settings back to cowboy, and run `make
upgrade` it should recompile and things should work.

Please let me know if you continue to have troubles.

-Jesse

[Nikolay Manolov]

Hi Jesse,

I switched back to cowboy as you mentioned and everything seems to be working well.
Thanks for your quick reaction. Good work.

-Nikolay

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[Jesse Gumm]

Awesome! Glad that's resolved.

-Jesse

--
Jesse Gumm
Owner, Sigma Star Systems
414.940.4866 || sigma-star.com || @jessegumm