validates_format_of :name, :with => /\A(\w(?:[\/' \-\.])?)*\Z/i
What does the 'i' do at the end of the regular expression?
Should I do validation for attributes that are not from a form?
create_table :customers do |t|
t.column :number, :integer, :limit => 4
As far as I know, Mysql 5.0.27 uses Int for number here. Will also a
small number need 4 bytes in the database?