On Wed, Feb 10, 2010 at 7:05 PM, Ryan Pusztai <[email protected]> wrote:
> Hi,
>
> I am using Orbit to write a web app and I have a very lengthy process of
> importing 500+ files into a database and I wanted to give the user feedback
> as this process continues. Is there a way to give the user updates?
>
> Even if it could be a "Please Wait..." message, then do the work, and then
> redirect to a complete status page. I know that web:redirect() exists, but I
> am having a tough time figuring out how to display a "please wait" message
> then starting the actual lengthy process.
>
> Sorry if this is a silly question, but I just can't seem to get it working.
>
Ryan, Orbit does not buffer output by default, so you can't send a response
to the client and continue processing. You have to use a special WSAPI rule
to do that:
-------
local function wsapi_action(wsapi_env, param)
local request = wsapi.request.new(wsapi_env)
local response = coroutine.wrap(function ()
coroutine.yield(my_waiting_html)
... do long operation ...
coroutine.yield(rest of response)
end)
return 200, { ["Content-Type"] = "text/html" }, response
end
orbit_app:dispatch_wsapi(wsapi_action, "/foo/(%d+)")
--------
WSAPI's request object is pretty similar to Orbit's web object, but slightly
different. Please see the WSAPI docs.
--
Fabio Mascarenhas
> --
> Regards,
> Ryan
>
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