How to start the show by clicking on a link on a locally stored webpage?

[sky-love]

This may be a silly question but I can't find any info how to start the show by simply clicking on a link on locally hosted website? I am trying with PHP with "echo shell_exec('python /home/pi/pipresents/pipresents.py -p Art -f -b') to no avail. The above show is working flawlessly when I type this command straight into the terminal but I need to trigger it via a html link or a button. Thank you!

[KenT2]

You may need to specify the complete path of the profile and python e.g.

/usr/bin/python /home/pi/pipresents/pipresents.py -o /home/pi -p myprofile

See Section 6.6 of the manual where autostart has a similar solution

[sky-love]

Thanks for getting back to me! Your suggestion did not affect anything. After playing with permissions and assigning www-data user to Video group the script is now returning "Pi Presents must be run from the Desktop" message. Does it mean the slideshow can not be started by clicking a link on a locally stored webpage?

[KenT2]

pp_manager is using the ps -A -o cmd command to see whether there is a copy of PP running to update its status.The running copy does not have to be started by pp_manager. It looks like there is a copy of pipresents running that has been started without specifying the -p option. PP_manager is not forgiving in this area. If you start the Task Manager from Accessories>Task Manager and select the View Full Command Line option you will see what commands are currently being executed.

[KenT2]

Thanks for getting back to me! Your suggestion did not affect anything. After playing with permissions and assigning www-data user to Video group the script is now returning "Pi Presents must be run from the Desktop" message. Does it mean the slideshow can not be started by clicking a link on a locally stored webpage?

This message is the result of

if "DESKTOP_SESSION" not in os.environ:

pp_manager.py can do it and is running a web server which is a part of Remi so it can be done. Look at pp_manager.py line 1406 to see how it is done. I suspect its a php thing.