Neil, If you found this useful we would very much appreciate it if you could put something on the wiki about it to help people who follow.
Cheers, Tim On Oct 26, 8:22 am, "Neil.Lv" <anim...@gmail.com> wrote: > Thanks guys! > > Maybe i should look at this thread first! > http://groups.google.com.my/group/liftweb/browse_thread/thread/579391... > > Cheers, > Neil > > On Oct 26, 2:21 pm, "Neil.Lv" <anim...@gmail.com> wrote: > > > > > In your "students" class: > > 1. declare a "teacher" object of type "MappedLongForeignKey(this, > > Role)" > > In your "teacher_student" class: > > > I have a silly question, I don't understand this code that the > > Role. > > > Why is the Role not the "teacher_student" ? > > > Cheers, > > Neil > > > On Oct 26, 1:09 pm, Naftoli Gugenheim <naftoli...@gmail.com> wrote: > > > > What is your intention regarding the students.teacher object? > > > > ------------------------------------- > > > > YING-KWANG TU<ying.kwang...@gmail.com> wrote: > > > > Neil, > > > > In a nutshell... assuming teacher is the main entity and student is > > > another > > > entity. You will need to: > > > > In your "teachers" class: > > > > 1. extend "with ManyToMany" trait > > > 2. declare a "students" object of type > > > "MappedManyToMany(teacher_student, > > > teacher_student.teacher_id, teacher_student.student_id, students)" > > > > In your "students" class: > > > > 1. declare a "teacher" object of type "MappedLongForeignKey(this, > > > Role)" > > > > In your "teacher_student" class: > > > > 1. declare a "teacher_id" object of type "MappedLongForeignKey(this, > > > teachers)" > > > 2. declare a "student_id" object of type "MappedLongForeignKey(this, > > > students)" > > > > *Note: the names are according to your convention. > > > > Yours, > > > yk > > > > On Mon, Oct 26, 2009 at 12:29 PM, YING-KWANG TU > > > <ying.kwang...@gmail.com>wrote: > > > > > Neil, > > > > > The following thread has very good information on many-to-many > > > > implementation: > > > > >http://groups.google.com.my/group/liftweb/browse_thread/thread/579391... > > > > > I can't summarize it for you but the thread above do give you some > > > > pointers. > > > > > Cheers, > > > > yk > > > > > On Mon, Oct 26, 2009 at 11:52 AM, Neil.Lv <anim...@gmail.com> wrote: > > > > >> Hi all, > > > > >> Dose anybody know that how to use the many-to-many relationship in > > > >> the lift model ? > > > > >> * We need to create a 3 models to represent the 3 tables ( teachers, > > > >> students, teacher_student ) > > > >> ex: > > > >> teachers -> id, name, sex, age, ... > > > >> students -> id, name, sex, age, ... > > > >> teacher_student -> id, student_id, teacher_id > > > > >> * How to write the code in the model to represent this > > > >> relationship ? > > > > >> Or any other ways that can achieve this purpose ? > > > > >> Thanks for any suggestion ! > > > > >> Cheers, > > > >> Neil --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
