Belongs To Many with custom foreign key

[lasseebert]

I have tried using this gem and belongs_to_many for the first time.

In my case I want to use it on a non-default primary key (short_id instead of id), so I define it like this:

belongs_to_many :tags, primary_key: :short_id, foreign_key: :tag_short_ids

This works fine, e.g. when using preload and calling tags on my model. However, if I try to set the tags with tags=, it uses the id column of the tags instead of the short_id.

On another note: I think there is a mistake in the wiki page for belongs_to_many where the descriptions for primary_key and foreign_key seems to be swapped in the options section.

Thanks for an awesome gem!

[crashtech]

Hi Lasse. Thanks for reporting this issue!
The docs have been fixed, and versions 3.3.2 and 2.4.3 address the problem.

[lasseebert]

Thanks for fixing so fast @crashtech

I had some incompatibility issues with some of our own ActiveRecord tweaks (I think), but I will try this gem again soon and see if I can make it work.

[crashtech]

Sure! Let me know if I can help in any way.