Postgres. The thimg is i have no table files. They somehow got deleted On Aug 11, 2015 12:30 PM, "Dave S" <snidely....@gmail.com> wrote:
> > > On Monday, August 10, 2015 at 7:32:31 PM UTC-7, Yebach wrote: >> >> Thank you for detailed answer >> >> I am trying to implement this in SQLFORM? Looks like multiple option is >> not avaliable, the field is presented as text field in the form >> >> BTW - why web2py does not add new field to a table. If I set migrate to >> True I get an error "table already exists" if it is set to false new fields >> were not created so I had to create them manually ?? >> >> Thank you >> > > Which database are you interfacing to? > > /dps > > >> >> 2015-08-07 19:10 GMT+08:00 Lisandro <rostagno...@gmail.com>: >> >>> Hi there. >>> Web2py has some cool field types called "list:string", "list:integer" >>> and "list:reference table". Check them here: >>> >>> http://www.web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#Field-types >>> >>> In your case, you could avoid the creation of the third table with >>> *list:reference >>> table*, for example, in your db.py: >>> >>> db.define_table('skill', Field('name')) >>> >>> db.define_table('worker',\ >>> Field('name'),\ >>> Field('skills','list:reference skill')) >>> >>> >>> Then you can do things like: >>> >>> skill_1 = db.skill.insert(name='coding in python') >>> skill_2 = db.skill.insert(name='making a cake') >>> skill_3 = db.skill.insert(name='writing a song') >>> >>> db.worker.insert(name='John', skills=[skill_1, skill_2]) >>> db.worker.insert(name='Paul', skills=[skill_3]) >>> db.worker.insert(name='Richard', skills=[skill_2, skill_3]) >>> >>> # search which workers have skill_2: >>> have_skill_3 = db(db.worker.skills.contains(skill_2)).select() >>> >>> >>> The list:reference field will be rendered as a select with multiple=True. >>> You can always write your own widget to use other stuff, like checkboxes. >>> >>> Look for "list:reference" in this group, you will lots of posts about >>> it. >>> Hope it helps! >>> >>> >>> >>> El jueves, 6 de agosto de 2015, 22:51:53 (UTC-3), Yebach escribió: >>>> >>>> Hello >>>> >>>> How to solve the problem of one to many relationship: >>>> >>>> Lets say I have a worker that has multiple skills. How to set up >>>> SQLFORM to add as many skills to the worker as possible. >>>> >>>> So skills in one table workers in another.I guess a third table will be >>>> needed >>>> >>>> Thank you >>>> >>>> best regards >>>> >>> -- >>> 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 a topic in the >>> Google Groups "web2py-users" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/web2py/HjhQdAZWFWY/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> web2py+un...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Lep pozdrav >> >> Vid Ogris >> >> >> -- > 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 a topic in the > Google Groups "web2py-users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/web2py/HjhQdAZWFWY/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > web2py+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- 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.
