Using has_and_belongs_to_many is great if you want to manage simple HABTM assoctions, although it provides no access as far as I am aware to other attributes if present in the join table. For a more complex join, you’ve gotta code it by hand.
I came across a bug with HABTM today. Do not add an id field to the join table, if you do, the habtm join table id will be populated to contain the id of your joined model, rather than an auto-incremented number.
This inevitably leads to problems! Check out the habtm reference here for more info.

Tags: habtm, Ruby On Rails

This entry was posted on Wednesday, January 24th, 2007 at 5:45 pm and is filed under Ruby On Rails. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.