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:
http://edgeguides.rubyonrails.org/migrations.html#migrations-and-seed-data

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?