You can do it with this https://groups.google.com/forum/#!topic/web2py/_xQUWYXZG54 but I leave it as an exercise how to do it. I will post an example later.
On Tuesday, 5 July 2016 13:10:19 UTC-5, Carlos Cesar Caballero wrote: > > Hi Antony, tough day with me no? > > You not need a join to get the id of any of the related tables, but if you > need only the top-table data, you only need one join, not n (you can look > the diagrams) > > Greetings. > > > El 05/07/16 a las 11:33, Anthony escribió: > > On Tuesday, July 5, 2016 at 11:23:36 AM UTC-4, Carlos Cesar Caballero > wrote: >> >> Hi Marlysson, thanks for your answer, yes maybe I must be more concise. >> >> In a clasic identifyng relationship, lets say a relation author-book-page >> (author has books and books has pages) In this case, the book primary key >> includes the author id, and the page primary key includes the book primary >> key (author and book ids). >> >> One of the advantages of the identifyng relationship model is that I can >> known what book belongs page without need a join, that can be useful when >> we have a deep relation tree. >> > > Can you show an example of the table definitions that would allow you to > get the related data without a join? > > Anthony > -- > 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. > > > -- 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.
