Is it possible to define composite primary key for table using active record?

Question

I'm using ActiveRecord in a ruby project without rails. I need to define composite primary key for a table.Normally migration creates primary key automatically. Is it possible to define my own composite primary key for a table using active record?

Why mark a question as duplicate if the original question doesn't have an answer? I just wasted my time looking the other question, in the other hand this question has two answers. I understand that the duplication is correct, but the mark confuses more than it helps. — Sertage, Jul 01 '15 at 12:10

score 7 · Accepted Answer · answered Jul 26 '13 at 13:11

7

There are some gems that give you this ability, such as composite_primary_key.

I don't know if Rails 4 has added support for this, would be very interested to hear if it does.

answered Jul 26 '13 at 13:11

Matt

13,948
6
44
68

score 1 · Answer 2 · edited May 23 '17 at 12:15

1

Question has been asked before, checkout: How to set composite key in Rails application

http://compositekeys.rubyforge.org/ might also be useful.

edited May 23 '17 at 12:15

Community

1
1

answered Jul 26 '13 at 13:11

MatthewFord

2,918
2
21
32

Is it possible to define composite primary key for table using active record?

2 Answers2

Linked