[Rail] 1. CRUD for Rails - Ex

1. To get a Zombie where id = 1:

Zombie.find(1)

2. To get Zombie id = 1,2,3, using one line commend:

Zombie.find(1,2,3)

3. Create a new Zombie: create command can new and save at the same time, it will insert a empty row into the database!

Zombie.create

4. Find the last Zombie in the database, but don't use IDs

Zombie.last

5. Find all Zombies ordered by their names.

Zombie.all.order(:name)

6. Update Zombie 3's graveyard to 'Benny Hills Memorial'

z = Zombie.find(3)
z.graveyard = 'Benny Hills Memorial'
z.save

7. Destroy the Zombie with an ID of 3.

Zombie.find(3).destory