Ruby on Rails - Adding multiple columns to a table in ruby on rails - ruby on rails tutorial - rails guides - rails tutorial - ruby rails



To add multiple columns to a table, separate field:type pairs with spaces when using rails generate migration command. The general syntax is:

rails generate migration NAME [field[:type][:index] field[:type][:index]] [options]
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For example, the following will add name, salary and email fields to the users table:

rails generate migration AddDetailsToUsers name:string salary:decimal email:string
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Which generates the following migration:

class AddDetailsToUsers < ActiveRecord::Migration[5.0]
  def change
    add_column :users, :name, :string
    add_column :users, :salary, :decimal
    add_column :users, :email, :string
  end
end
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