class Student < ActiveRecord::Base
belongs_to :promotion
validates_presence_of :firstname
validates_presence_of :lastname
validates_presence_of :date_of_birth
named_scope :scientifics, :conditions => {:section => "S"}
named_scope :majors , :conditions => ['date_of_birth < ?', 18.years.ago]
named_scope :minors , :conditions => ['date_of_birth > ?', 18.years.ago]
def to_param
"#{id}-#{firstname}_#{lastname}"
end
def fullname
[firstname, lastname].join(' ')
end
def age
age = Time.now.year - date_of_birth.year
age-=1 if Time.now.yday <= date_of_birth.yday #retirer 1 an si la date anniversaire n'est pas passée cette année
age
end
def major?
age >= 18
end
end
