Create seed file from data already in the database

Solution 1:

There is a gem called seed_dump, which will do exactly what you want:

Not sure about any existing rake tasks, but you can try running something like this in the rails console & paste the results into your seeds.rb file

(warning: dirty & untested)

c = Category.all

c.each do |cat|
  puts "Category.create(:name => '#{cat.name}')"
end

Adjust for any additional fields you may have.

Hope this helps.