If I have a simple tagging system, with three models: posts, tags, and
posts_tags; and I delete a tag, then naturally I would want to delete
any associations in posts_tags that include that tag, right?
But I don’t want to create a model for my posts_tags table; something
tells me Rails has a way of removing records from join tables
automatically. But I don’t know where I would start from for that.
Anybody care to set me on the right path?