Re: How to make an action generate html?

On Tue, Feb 13, 2024 at 01:01:24PM -0500, John P. Rouillard wrote:
> Hi all:
> 
> I am trying to find out how to return a templated page from an action.
> My thought is that the page template would be something like:
> 
>    index.chart.html
> 
> and would be expanded/returned from the action with the action somehow
> embedding an svg as the main content.

I've done a similar thing: Return a picture (plotted with matplotlib)
from an action. The idea is to simply return the contents from the
handle() method.

This is not 'templated' in that it doesn't use roundup's templating
engine. But it is computed contents.

Some code here:

class Log_Status_Statistics (actions.Action, _Helper):

    def handle (self, outfile = None):
...
        h = self.client.additional_headers
        h ['Content-Type'] = 'image/png'
        self.client.header ()
        if self.client.env ['REQUEST_METHOD'] == 'HEAD':
            return 'dummy'
        io = outfile
        if io is None:
            io = self.client.request.wfile
        sio  = BytesIO ()
        pyplot.axis ('equal')
        keys = ['service', 'down', 'up']
        colr = dict (service = '#9999FF', down = '#FF8989', up = '#C0DDFF')
        st   = [stat [k] for k in keys if stat [k]]
        lbl  = [k for k in keys if stat [k]]
        clr  = [colr [k] for k in keys if stat [k]]
        matplotlib.rc ('font', size = 24)
        pyplot.title ('Average Uptime')
        pyplot.pie (st, labels = lbl, autopct="%1.2f%%", colors = clr)
        pyplot.savefig (sio, dpi=100, format='png', transparent=True)
        pyplot.clf ()
        v = sio.getvalue ()
        sio.close ()
        return v

Hope that helps!

Kind regards,
Ralf
-- 
Dr. Ralf Schlatterbeck                  Tel:   +43/2243/26465-16
Open Source Consulting                  www:   www.runtux.com
Reichergasse 131, A-3411 Weidling       email: [email protected]