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<H1>[99s-extend] cowboy_rest, POST and redirect</H1>
<B>Rolph de Ruiter</B>
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TITLE="[99s-extend] cowboy_rest, POST and redirect">Rolph.deRuiter at spilgames.com
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<I>Tue Oct 29 10:16:15 CET 2013</I>
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<PRE>(forgot to include the list)
On 10/29/13 10:14 AM, "Rolph de Ruiter" <<A HREF="https://lists.ninenines.eu/listinfo/extend">Rolph.deRuiter at spilgames.com</A>>
wrote:
><i>Thanks!
</I>><i>
</I>><i>{halt, NewReq, State} worked like a charm :)
</I>><i>
</I>><i>Cheers,
</I>><i>Rolph
</I>><i>
</I>><i>On 10/29/13 10:09 AM, "Loïc Hoguin" <<A HREF="https://lists.ninenines.eu/listinfo/extend">essen at ninenines.eu</A>> wrote:
</I>><i>
</I>>><i>On 10/29/2013 10:00 AM, Rolph de Ruiter wrote:
</I>>>><i> Hi,
</I>>>><i>
</I>>>><i> I'm using cowboy_rest for a part of our api to handle POST requests.
</I>>>><i> Under certain conditions, I would like to redirect to a new location
</I>>>><i> (based on availability of the redirect qs parameter).
</I>>>><i> I was unable to get the moved_temporarily/2 callback to work (was not
</I>>>><i> invoked at al). So I just do the 302 myself, using cowboy_req:reply/4.
</I>>>><i> This works, however, every time it produces an error in the emulator
</I>>>><i> process:
</I>>>><i> [error] emulator Error in process <0.509.0> on node '<A HREF="https://lists.ninenines.eu/listinfo/extend">api at dev.loc</A>'
</I>>>><i>with
</I>>>><i> exit value: {function_clause,[{cowboy_req,reply,[204,[],<<0
</I>>>><i> bytes>>,{http_req,#Port<0.14491>,ranch_tcp,keepalive,<0.509.0>,<<4
</I>>>><i> bytes>>,'HTTP/1.1',{{10,10,10,1},62197},<<15
</I>>>><i>bytes>>,undefined,8000,<<26
</I>>>><i> bytes>>,undefined,<<14 bytes>>,[{<<8 bytes>>,<<5 bytes>>}],[{method,<<5
</I>>>><i> bytes>>}],[{<<4 bytes>>,<<20 bytes>>},{<<10 bytes>>,<<10 bytes>>},{<<14
</I>>>><i> bytes>>,<<2 bytes>>},{<<6 bytes>>,<<74 bytes>>},{<<6 bytes>>,<<27
</I>>>><i> bytes>>},{<<10 bytes>>,<<120 bytes>>},{<<12 bytes>>,<<33 bytes>>},{<<7
</I>>>><i> bytes>>,<<54 bytes>>},{<<15 bytes>>,<<17 bytes>>},{<<15 bytes>>,<<14
</I>>>><i> bytes>>},{<<6 bytes>>,<<245 bytes>>}],[{<<14 bytes>>,34},{<<6
</I>>>><i> bytes>>,undefined},{<<14 bytes>>,34},{<<12 bytes>>,{<<11 bytes>>,<<21
</I>>>><i> bytes>>,[]}},{<<17 bytes>>,undefined},{<<13 bytes>>,...
</I>>>><i>
</I>>>><i> Can you point me out how to (ideally) make use of moved_temporarily/2
</I>>>><i>or
</I>>>><i> how I can prevent cowboy_rest from wanting to reply with 204 in this
</I>>>><i>case?
</I>>><i>
</I>>><i>moved_temporarily is only called if the resource previously existed.
</I>>><i>
</I>>><i>As for calling reply yourself, you just need to return {halt, NewReq,
</I>>><i>State} afterwards.
</I>>><i>
</I>>><i>--
</I>>><i>Loïc Hoguin
</I>>><i>Erlang Cowboy
</I>>><i>Nine Nines
</I>>><i><A HREF="http://ninenines.eu">http://ninenines.eu</A>
</I>><i>
</I>
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