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<H1>[99s-extend] Accept header in POST request</H1>
<B>Łukasz Biedrycki</B>
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TITLE="[99s-extend] Accept header in POST request">lukasz.biedrycki at gmail.com
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<I>Mon Feb 3 19:13:04 CET 2014</I>
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<PRE>Hi,
I have a rest handler that accepts POST and PUT requests with
“application/json” content type.
I have content_types_accepted function defined as follows:
content_types_accepted(Req, State) ->
{[{‘application/json', from_json}], Req, State}.
The problem I have is within a request that has two headers:
*Content-type*: application/json
*Accept*: application/json
With this combination I receive *406*.
You can repeat it with test:
http_SUITE.erl:
1072 rest_postonly(Config) ->
1073 Client = ?config(client, Config),
1074 Headers = [
1075 {<<"content-type">>, <<"text/plain">>},
1076 {<<"accept">>, <<"text/plain">>}
1077 ],
1078 {ok, Client2} = cowboy_client:request(<<"POST">>,
1079 build_url("/postonly", Config), Headers, "12345", Client),
1080 {ok, 204, _, _} = cowboy_client:response(Client2).
My solution to that was to add a content_types_provided function:
content_types_provided(Req, State) ->
ContentTypes = [{{<<"application">>, <<"json">>, '*'}, to_json}],
{ContentTypes, Req, State}.
But it is useless as *to_json* callback registered is not called anyhow.
Adding *content_types_provided* function is a correct solution in this case?
Or I am missing something here?
“Accept” header is not relevant only in case of GET requests?
Thank for help,
Łukasz Biedrycki
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