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Delete Callback - Delete some Files when record is deleted from a table

← Datagrid Edit
You can use DETELE trigger to delete files using sys_exec (MySQL)
CREATE TRIGGER foobar
AFTER DELETE ON photo
FOR EACH ROW
BEGIN
   CALL sys_exec(concat('/bin/rm -f ',filename));
END
HOWEVER, IT IS NOT RECOMMENDED.

A much better (and safer) practice is to leave the files simply on the server and run a separate batch script daily to remove the files.

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