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 <javascript:>>: > >> 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 <javascript:>. >> 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 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.
