#5929: Allow Fields to use multiple db columns (complex datatypes) -------------------------+-------------------------------------------------- Reporter: poelzi | Owner: nobody Status: new | Component: Database wrapper Version: other branch | Keywords: qs-rf Stage: Unreviewed | Has_patch: 0 -------------------------+-------------------------------------------------- Currently it seems that it is not possible to have complex db filds. For example: [https://dev.leipzig.freifunk.net/trac/browser/ffsomething/branches/generic/apps/management/models.py Implementation of a IP model] which actually should be a field type not a model. The implementation is not clean, because foreign key lookups for example do not work. The model maps for example: {{{ NetworkAddress.objects.filter(ip__in="192.168.0.10/16") }}} into a complex query for a ip resisting in a network range.
Due the fact that model fields can only map to one db column, many complex data types can't be implemented. For example a ipv6 ip address which is a 128 bit value can't be handled by most db implementations of integer fields, so it has to be expanded to multiple columns plus a additional netmask column. Using varchar doesn't work because there is no way to search for network ranges or IPs in ranges, etc... I think a field should be able to implement lookup mappings which can be overridden to implement complex datatypes as well as use multiple db fields. -- Ticket URL: <http://code.djangoproject.com/ticket/5929> Django Code <http://code.djangoproject.com/> The web framework for perfectionists with deadlines --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django updates" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-updates?hl=en -~----------~----~----~----~------~----~------~--~---
