Manual Installation

1. Create a migration and paste in the following:

   Granite:

    -- +micrate Up
    ALTER TABLE users ADD COLUMN sign_in_count VARCHAR NULL;
    ALTER TABLE users ADD COLUMN current_sign_in_ip VARCHAR NULL;
    ALTER TABLE users ADD COLUMN last_sign_in_ip VARCHAR NULL;
    ALTER TABLE users ADD COLUMN current_sign_in_at TIMESTAMP NULL;
    ALTER TABLE users ADD COLUMN last_sign_in_at TIMESTAMP NULL;
   
    -- +micrate Down
    ALTER TABLE users DROP COLUMN sign_in_count VARCHAR NULL;
    ALTER TABLE users DROP COLUMN current_sign_in_ip VARCHAR NULL;
    ALTER TABLE users DROP COLUMN last_sign_in_ip VARCHAR NULL;
    ALTER TABLE users DROP COLUMN current_sign_in_at TIMESTAMP NULL;
    ALTER TABLE users DROP COLUMN last_sign_in_at TIMESTAMP NULL;

   or

   Jennifer:

    class AddTrackableToUsers < Jennifer::Migration::Base
        def up
        change_table(:users) do |t|
            t.add_column(:sign_in_count, :string)
            t.add_column(:current_sign_in_ip, :string)
            t.add_column(:last_sign_in_ip, :string)
            t.add_column(:current_sign_in_at, :timestamp)
            t.add_column(:last_sign_in_at, :timestamp)
        end
        end
   
        def down
        change_table(:users) do |t|
            t.drop_column :sign_in_count
            t.drop_column :current_sign_in_ip
            t.drop_column :last_sign_in_ip
            t.drop_column :current_sign_in_at
            t.drop_column :last_sign_in_at
        end
        end
    end

2. Migrate:

   Granite:

    amber db migrate

   or

   Jennifer:

    crystal sam.cr -- db:migrate

3. Mixin the neccessary modules:

   Granite:

   Add :trackable to your mochi_granite macro call

    mochi_granite(:trackable)

   or

   Jennifer:

   Add :trackable to your mochi_jennifer macro call

    mochi_jennifer(:trackable)

4. Done!