stefanosc · March 15, 2016 23:07 · Mar 13, 2014 · Mar 13, 2014
diff --git a/email.rb b/email.rb
@@ -1,6 +1,6 @@
 class Email < ActiveRecord::Base
 
-  # Nope, it's not RFC compliant. Fuck that regex.
+  # Nope, it's not RFC compliant. F*** that regex.
   # http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html
   EmailRegex = /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i.freeze
 

diff --git a/email.rb b/email.rb
@@ -0,0 +1,51 @@
+class Email < ActiveRecord::Base
+
+  # Nope, it's not RFC compliant. Fuck that regex.
+  # http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html
+  EmailRegex = /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i.freeze
+
+  before_validation :strip_spaces
+
+  # Public: The email address.
+  # column :address
+  # Returns a String.
+  validates :address,
+    :presence   => true,
+    :length     => { :in => 3..254 },
+    :format     => { :with => EmailRegex, :message => "does not look like an email address" },
+    :uniqueness => { :case_sensitive => false, :message => "is taken" }
+
+  # Public: User email address belongs to.
+  # column :user_id
+  # Returns a User.
+  validates :user_id, :presence => true
+  belongs_to :user
+
+  # Public: Email address validation as a service.
+  #
+  # Returns a boolean
+  def self.valid_email_address?(email)
+    EmailRegex.match(email)
+  end
+
+  # Public: Is this a primary email address?
+  # column :primary
+  # Returns a TrueClass or FalseClass.
+
+  # TODO: Validate that only one Email#address per User is the primary.
+
+  # Public: Set this email as the primary email. Sets primary to false for any
+  # other emails for this User.
+  def set_primary
+    self.class.transaction do
+      self.class.where(:user_id => user_id, :primary => true).update_all(:primary => false)
+      self.primary = true
+      save
+    end
+  end
+
+  # Internal: Strip all space from the email.
+  def strip_spaces
+    self.address = address.strip
+  end
+end