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| author | Loïc Hoguin <[email protected]> | 2016-08-29 12:39:49 +0200 |
|---|---|---|
| committer | Loïc Hoguin <[email protected]> | 2016-08-29 12:40:03 +0200 |
| commit | c807880f7ac73f813b2660ea81a00f7712a4e793 (patch) | |
| tree | ba1d09e9b177f230665a80513b33fbd532000ce4 /_build/static/archives/extend/2013-October/000287.html | |
| parent | b1df25a7d9cda697513650659b781b55b40898f8 (diff) | |
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| -rw-r--r-- | _build/static/archives/extend/2013-October/000287.html | 103 |
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diff --git a/_build/static/archives/extend/2013-October/000287.html b/_build/static/archives/extend/2013-October/000287.html new file mode 100644 index 00000000..a4a09c33 --- /dev/null +++ b/_build/static/archives/extend/2013-October/000287.html @@ -0,0 +1,103 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> +<HTML> + <HEAD> + <TITLE> [99s-extend] REST handler failure + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20REST%20handler%20failure&In-Reply-To=%3CCAJCf5Rz0mKmouz5DEunOOZ%2Bb21bfLCjyQy7ssbHAgUp%2B3rGCaw%40mail.gmail.com%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <style type="text/css"> + pre { + white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ + } + </style> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="000286.html"> + <LINK REL="Next" HREF="000288.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[99s-extend] REST handler failure</H1> + <B>Daniel Goertzen</B> + <A HREF="mailto:extend%40lists.ninenines.eu?Subject=Re%3A%20%5B99s-extend%5D%20REST%20handler%20failure&In-Reply-To=%3CCAJCf5Rz0mKmouz5DEunOOZ%2Bb21bfLCjyQy7ssbHAgUp%2B3rGCaw%40mail.gmail.com%3E" + TITLE="[99s-extend] REST handler failure">daniel.goertzen at gmail.com + </A><BR> + <I>Tue Oct 29 21:25:54 CET 2013</I> + <P><UL> + <LI>Previous message: <A HREF="000286.html">[99s-extend] cowboy_rest, POST and redirect +</A></li> + <LI>Next message: <A HREF="000288.html">[99s-extend] REST handler failure +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#287">[ date ]</a> + <a href="thread.html#287">[ thread ]</a> + <a href="subject.html#287">[ subject ]</a> + <a href="author.html#287">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>My situation is that I have a rest handler that may fail due to invalid url +segments. Example situation: + + +init(_Transport, _Req, _Opts) -> + {upgrade, protocol, cowboy_rest}. + +content_types_provided(Req, State) -> + {[{<<"application/json">>, get_json}], Req, State}. + +get_json(Req0, State) -> + {Params, Req1} = lists:mapfoldl(fun cowboy_req:binding/2, Req0, +[param1, param2, param3, ....]), + + case catch other_module:request(Params) of + {'EXIT', {badarg, _}} -> + hmmm, Params were bad and I would like to return a 404 code now. + Result -> + {jiffy:encode(Result), Req1, State} + end. + + + +So I would like to return a 404 code when my underlying request function +fails, but it appears my choices are: + +- return a 200 (ok) response with data. +- crash and cause a 500 (Internal Server Error) response to be returned. +Not exactly the sentiment I want. + + +Is there some other way to cause a 404 response? + +I realize I could add path constraint functions, but I will be replicating +logic from my underlying request function. Furthermore, the constraint +functions consider parameters in isolation, so that won't work if the +validity of parameters is coupled. + +Thanks, +Dan. +-------------- next part -------------- +An HTML attachment was scrubbed... +URL: <<A HREF="http://lists.ninenines.eu/archives/extend/attachments/20131029/a9204600/attachment.html">http://lists.ninenines.eu/archives/extend/attachments/20131029/a9204600/attachment.html</A>> +</PRE> + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="000286.html">[99s-extend] cowboy_rest, POST and redirect +</A></li> + <LI>Next message: <A HREF="000288.html">[99s-extend] REST handler failure +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#287">[ date ]</a> + <a href="thread.html#287">[ thread ]</a> + <a href="subject.html#287">[ subject ]</a> + <a href="author.html#287">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://lists.ninenines.eu/listinfo/extend">More information about the Extend +mailing list</a><br> +</body></html> |