Migration Methods in Ruby

From the Ruby on Rails cheat sheet · Database & Migrations · verified Jul 2026

Migration Methods

Common methods used in migration files

ruby

class CreateProducts < ActiveRecord::Migration[7.0]
  def change
    create_table :products do |t|
      t.string :name
      t.text :description
      t.decimal :price, precision: 8, scale: 2
      t.integer :stock, default: 0
      t.references :category, foreign_key: true

      t.timestamps
    end

    add_index :products, :name
  end
end

✅ t.timestamps adds created_at and updated_at

💡 Use references for foreign keys with index

🔍 precision and scale control decimal places

⚡ Add indexes for frequently queried columns

migrationsschemadatabase

More Ruby tasks

Database Commands

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