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<H1>[99s-extend] Prevent resource creation on POST</H1>
<B>Amol Hatwar</B>
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TITLE="[99s-extend] Prevent resource creation on POST">amol at hatwar.org
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<I>Sun Oct 5 04:56:58 CEST 2014</I>
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<PRE>Hello,
I was recently tinkering with cowboy_rest and found that there is no way prevent resource creation in a POST request when it already exists. Either that, or I'm probably not doing something right or don't know enough...
Here's what I have running:
A user tries to signup with a post request. To be successful, the username has to be unique. The resource_exists/2 method responds with proper true and false values by looking at the request body.
Here's what I want done:
Iff the resource_exists callback returns true, I don't want the AcceptResource callback to run at all. Instead, I want to send a 4XX status and halt. Is there a canonical way of doing this?
Cheers,
AH
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