The usual process for CORS is to put web2py behind nginx and configure 
nginx for CORS

On Tuesday, 16 April 2019 03:45:28 UTC-7, David Orme wrote:
>
> Hi,
>
> I'm running a static website from an S3 bucket that calls an API running 
> on web2py and I've run into a problem with CORS.  I can update the headers 
> for API calls by editing the calls() controller:
>
> def call():
>     """
>     exposes services. for example:
>     http://..../[app]/default/call/jsonrpc
>     decorate with @services.jsonrpc the functions to expose
>     supports xml, json, xmlrpc, jsonrpc, amfrpc, rss, csv
>     """
>
>
>     # Set response headers
>     response.headers['Pragma'] = None
>     response.headers['Access-Control-Allow-Origin'] = '*'
>     response.headers['Access-Control-Allow-Headers'] = 'Content-Type'
>     response.headers['Access-Control-Allow-Methods'] = 'GET, OPTIONS'
>
>
>     # Dump the session to remove Set-Cookie
>     session.forget(response)
>
>
>     return service()
>
>
> What I can't figure out how to do is to provide those headers for some 
> static resources. I could wrap them up in a service and cache them, but is 
> there a way to preserve the existing path and adjust the CORS headers? A 
> quick look at gluon/main.py makes it seem tricky, but there are a lot of 
> moving parts in there!
>
> Cheers,
> David
>
>

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