I constantly find myself making a major change to a model and wanting to reseed only that models section from the seed.yml file in the rails console.

Open your rails console and run the following commands

seeds = YAML::load_file(Rails.root.join('db', 'seed.yml'))
Category.create!(seeds['categories'])

This will seed only the ‘categories’ section of the seed.yml file

Related External Links:

• Stack Overflow - Ruby on Rails Loading Seed Data from a YAML file