Rails ActiveRecord::Migration what is the difference between index: true and add_index?

Question

What is the difference between

t.boolean :is_live, index: true

and

add_index :table_name, :is_live

If there i

Answer 1

In short: both do the same job. ìndex: true` just saves you an additional line. Look here https://github.com/rails/rails/pull/5262#issuecomment-4329571