Ruby on Rails Applying Model to Two Other Models

rubyonrails-talk
1

Hi, I know this is probably a basic question but I am relatively new to Ruby on Rails.

I have a website in which I have three models: courses, students, and works. The website is supposed to be a grade keeper. A course has many works, like a test. You can add a work to a course, but I want that work to be distributed as single works to each student in that course as well. Does anyone know how I would be able to do this?

Thank you in advance,

Jacob Grishey

2

Hi, I know this is probably a basic question but I am relatively new to Ruby on Rails.

I have a website in which I have three models: courses, students, and works. The website is supposed to be a grade keeper. A course has many works, like a test. You can add a work to a course, but I want that work to be distributed as single works to each student in that course as well. Does anyone know how I would be able to do this?

If I understand correctly is it just that you want Student has many works Work belongs to student

Or possibly you need a has_and_belongs_to_many between them.

If not then please explain the problem more carefully. In particular I don't know what you mean by 'distributed as single works'.

Have you already worked right through a good tutorial such as railstutorial.org (which is free to use online)? If not then I suggest you do that before anything else, it will give you a good grounding in rails.

Colin

3

Hi, I know this is probably a basic question but I am relatively new to Ruby on Rails.

I have a website in which I have three models: courses, students, and works. The website is supposed to be a grade keeper. A course has many works, like a test. You can add a work to a course, but I want that work to be distributed as single works to each student in that course as well. Does anyone know how I would be able to do this?

This feels like it's lacking another model. I did a system where there were quizzes after a medical Continuing Education presentation, and there was the following setup:

  User (has_many examinations)   Examination (belongs_to user, belongs_to test) [also stores the individual's answers to each question]   Test (has_many examinations)

I won't get into the questions and answers here, but this should give you a possible direction. The idea is that a Test is a template -- the mimeograph master if you go back that far. There are many examinations derived from that test, and each examination is referencing a single user and a single test (master). How that exam gets filled out is unique to the user, and I think that's the missing model you are looking for.

Walter