demo_app/my_platform/db/migrate/20181031094634_devise_token_auth_create_user_accounts.your_platform.rb
# This migration comes from your_platform (originally 20181031080639)
class DeviseTokenAuthCreateUserAccounts < ActiveRecord::Migration[5.0]
def change
add_column :user_accounts, :tokens, :text
add_column :user_accounts, :provider, :text
add_column :user_accounts, :uid, :text
end
end