fab-manager/db/migrate/20190528140012_remove_user_id_columns.rb

class RemoveUserIdColumns < ActiveRecord::Migration
  def change
    remove_column :invoices, :user_id, :integer
    remove_reference :organizations, :profile, index: true, foreign_key: true
    remove_reference :wallets, :user, index: true, foreign_key: true
    remove_reference :wallet_transactions, :user, index: true, foreign_key: true
    remove_reference :history_values, :user, index: true, foreign_key: true
    remove_reference :invoices, :operator, index: true, foreign_key: true
  end
end