By the way, I found http://www.web2py.com/book/default/chapter/06#before-and-after-callbacks
which can help in some cases, where I thought to use virtual fields as with callbacks you can update needed info from foreign tables (or computed fields might also be enough in some cases) 2012 m. gruodis 18 d., antradienis 09:03:05 UTC+2, software.ted rašė: > > Does SQLFORM.grid support adding and display of a virtual field...am > getting an exception...my code: > > db.file_subject_issue.file_name = Field.Virtual(lambda row: > get_file_name(row.file_subject_issue.file_id)) > fields = [db.file_subject_issue.file_id, > db.file_subject_issue.date_created, db.file_subject_issue.file_name] > query =.... > > form = SQLFORM.grid(query,fields=fields,...) > > I am getting the error > > <type 'exceptions.AttributeError'> 'FieldVirtual' object has no attribute > '_tablename' > > 1. > 2. > 3. > 4. > 5. > 6. > 7. > 8. > 9. > 10. > 11. > 12. > > Traceback (most recent call last): > File "/home/www-data/web2py/gluon/restricted.py", line 212, in restricted > > exec ccode in environment > File > "/home/www-data/web2py/applications/intranet/controllers/administration.py" > <https://192.168.0.251/admin/default/edit/intranet/controllers/administration.py>, > line 176, in <module> > > File "/home/www-data/web2py/gluon/globals.py", line 188, in <lambda> > > self._caller = lambda f: f() > > File > "/home/www-data/web2py/applications/intranet/controllers/administration.py" > <https://192.168.0.251/admin/default/edit/intranet/controllers/administration.py>, > line 71, in file_track > > selectable=False,csv=False , paginate=20, user_signature=False) > > File "/home/www-data/web2py/gluon/sqlhtml.py", line 1796, in grid > > if field._tablename in tablenames] > AttributeError: 'FieldVirtual' object has no attribute '_tablename' > > > > > -- > > ....................................................................................... > Teddy Lubasi Nyambe > Opensource Zambia > Lusaka, ZAMBIA > > Cell: +260 97 7760473 > website: http://www.opensource.org.zm > > ~/ > Human Knowledge belongs to the world! - AntiTrust > > Man is a tool-using animal. Without tools he is nothing, with tools he is > all - Thomas Carlyle 1795-1881 > > /~ > -- --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
