How do I use Rails migrations for data seeding?

How do I use Rails migrations for data seeding?

You can use Rails migrations to create and modify database tables, and you can also seed data using the db/seeds.rb file.

Can you show me an example of a migration that seeds data?

Sure! You can create a migration like this:

class CreateUsers < ActiveRecord::Migration[6.0]
  def change
    create_table :users do |t|
      t.string :name
      t.string :email
      t.timestamps
    end
  end
end

Then, in your db/seeds.rb, you can add:

User.create(name: 'John Doe', email: '[email protected]')

How do I run the seed file after creating the migration?

You can run the seed file by executing the command rails db:seed in your terminal after running your migrations.