HI, I must have skipped _and, it's what i was looking for. But also started wondering about second example, but it gives me empty results on drop-down. When i remove "~" it works as expected returning IPs that have been already assigned.
db.server.ipaddress_id.requires = IS_IN_DB(db(~db.ipaddress.id.belongs(db(db.server.id>0)._select(db.server.ipaddress_id))),db.ipaddress.id) On Saturday, 25 April 2015 20:54:52 UTC+2, Niphlod wrote: > > You should read the section on database validators .... > http://web2py.com/books/default/chapter/29/07/forms-and-validators#Database-validators > > you can either use the _and argument of IS_IN_DB, but more easily for > everybody, e.g. there's not even a chance they can select an ip that is > used yet, you can just pass a set instead of the whole table to IS_IN_DB... > > db(~db.ipaddress.id.belongs(db(db.server.id > >0)._select(db.server.ipaddress_id))) > > On Saturday, April 25, 2015 at 5:28:16 PM UTC+2, kecajk...@gmail.com > wrote: >> >> Hi Guys, >> >> I have simple database: >> >> db.define_table('ipaddress', >> Field('ip', unique=True, length=200), >> Field('subnet', length=200), >> format = '%(ip)s') >> >> db.define_table('server', >> Field('servername', length=200), >> Field('port', length=200), >> Field('ipaddress_id', 'reference ipaddress')) >> >> I have few records in ipaddress table and not would like to add some >> validators. >> When adding record to server table i would like to check if ipaddress_id >> exist in ipaddress table AND if it hasn't been used before in server table. >> That can be done by doing: >> >> db.server.ipaddress_id.requires = IS_IN_DB(db,db.ipaddress.id, '%(ip)s') >> ,IS_NOT_IN_DB(db,db.server.ipaddress_id, '%(ip)s')] >> >> But in that case Filed server.ipaddress_id is not a dropdown menu and >> it's not presented as %(ip)s. I would like to have dropdown to choose IP >> available in ipaddress table, but just the one which hasn't been used >> before. Any tips? >> >> Thanks, >> >> -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- 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/d/optout.
