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<H1>[99s-extend] Rewriting URLs</H1>
<B>Paul Dickson</B>
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TITLE="[99s-extend] Rewriting URLs">pdtwonotes at gmail.com
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<I>Sun Jan 25 23:30:08 CET 2015</I>
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<PRE>I am trying to write a middleware step that will modify the URL in a
request before it gets to the default static request handler. I can not
find an example of how to do this. What I have so far:
execute( Req, Env ) ->
HostUrl = cowboy_req:host_url(Req),
NewUrl = rewrite( HostUrl ),
NewReq = ???
{ok, NewReq, Env}.
How do I modify a Request object so that it contains my modified URL,
which cowboy_static will then process normally? My 'rewrite' function
converts logical directory names into real file-system paths, using a
dynamic algorithm that can not be simply written into cowboy's dispatch
rules.
The dispatch rules I am using is as follows, where 'bz_libmap' is my
module containing the code above:
{"/music/[...]", cowboy_static, {dir, bz_libmap, ""}},
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