Where to find info about seed.rb, db:seed functionality?

There is no any mention about it neither in API nor in Guide. How to use these features? The only gist with two sentences is in db/seed.rb file. That's really not enough.

You could refer the edge guides: http://edgeguides.rubyonrails.org/migrations.html#migrations-and-seed-data

Dheeraj Kumar wrote in post #1106428:

You could refer the edge guides: Active Record Migrations — Ruby on Rails Guides

Thank you. Didn't know about this resource.

Seeds have been in Rails for quite some time; how does information migrate from Edge Guides to mainstream Guides?

The guides are part of the main rails repo, so edge guides is built from master and the current guides.rubyonrails.org is built from current stable release from the 3-2 branch. When rails 4.0 comes out, guides.rubyonrails.org will be built from that instead.

Fred

So then why aren’t seeds mentioned in guides?