Sorry, I missed one table. The users_facility_levels table is used to link the three tables listed below to give the lever per user/facility.
On Wednesday 22 February 2012 11:18:23 Oliveiros d'Azevedo Cristina wrote: > Hi, Gary, > > I'm answering by editing your e-mail > ______ > > >I have three tables, > > > > users - all users of my web site > > facilities - facilities available on my web site > > facility_levels - access levels per user/facility. > > > > One of my facilities is a document library (f_id = 22) > > For this facility I have the levels > > > > select * from facility_levels where fl_f_id=22 order by fl_level; > > fl_f_id | fl_level | fl_desc > > ---------+----------+-------------- > > 22 | 1 | Read Only > > 22 | 2 | Add Versions > > 22 | 3 | Amend > > (3 rows) > > > > > > This sets the global access level for the Document Library per user. > > * It is not clear for me how this sets the global access level per user. > Shouldnt the facility_levels table have a u_id field, foreign key from > users table? And thus becoming an associative table between users and > facilities? > > > I now want to add authentication control on a document or folder level. > > For > > this I need to create a table library_document_user_level > > > > u_id - user id > > ld_id - library document id > > fl_level - level > > > > The foreign key constraint on fl_level needs to check facility_levels for > > fl_f_id = 22 as well as fl_level existing. > > * I may not be fully understanding your problem, but > library_document_user_level shouldn't have a field named fl_f_id, to > identify which facility the document/folder belongs to? > Had it such a field, you could do something like > FOREIGN_KEY (fl_f_id,fl_level) REFERENCES facility_levels (fl_f_id, > fl_level) > > > Just my two cents > > Best, > Oliveiros > > > I've googled this but can't find a suitable solution. Can anyone help > > please. > > -- > > Gary Stainburn > > Group I.T. Manager > > Ringways Garages > > http://www.ringways.co.uk > > > > -- > > Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) > > To make changes to your subscription: > > http://www.postgresql.org/mailpref/pgsql-sql -- Gary Stainburn Group I.T. Manager Ringways Garages http://www.ringways.co.uk -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
