Homework lesson #3

gistfile1.md

Learn !

Its very important to know Validations and Field types as we will use them alot in our code. Please take the time to read (or at least skim over) the validations list to see what kind of validations are possible.

• Validations in Rails
• Migrations

Create a new model

• Cat with fields "name - string", "breed - string", "birthdate - date"
• You can use a short hand of model creation like: rails generate model cat name:string height:integer ...

Make sure you can create it from command line via initiator

Cat.create!(:name => 'Suzi', :breed => :angora, birthdate: 3.years.ago)
Remember attr_accessible !

Add validations

1. Name must be present and between 5 and 20 characters
2. Breed must be one of the following: :arabean, :asian, :bengal, :persian
3. Birthdate must be after 'today' (Date.today) and cat must not be older than 20 years.