Multiple Join Tables between Two Tables? Another solution?

rcgann
Mon, 25 Jun 2007 18:34:55 -0000

I''m a RoR newbie, so I''d like to be sure I''m on the
right track.  I''m
coding an application where I have one table with students and another
table with first year seminars (fyss).  The students have listed 4 fys
preferences in order.

Since the FYS seminars are listed in order and we are trying to give
student their first choices, I cannot use a 1 - n relationship between
table students and table fyss.

My design uses a models as join tables.  It works as follows:

- I have a table students with an id and a name.
- I have a table fyss with an id and a course title.
- I have a table fyschoice1s with an id, a student_id, and a fys_id.
- I have a table fyschoice2s with an id, a student_id, and a fys_id.
- I have a table fyschoice3s with an id, a student_id, and a fys_id.
- I have a table fyschoice4s with an id, a student_id, and a fys_id.

The last four tables have a 1 - 1 relationship between, for example,
students and fsychoices1 and between fyss and fyschoices1.

Is this the best solution?  I''d deeply appreciate any guidance.
Thanks in advance.


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