Add email aliases for users

Emails are used to associate commits with users. The emails
are not verified and don't have to be valid email addresses. They
are assigned on a first come, first serve basis.

Notifications are sent when an email is added.

1 files changed, 33 insertions, 0 deletions

diff --git a/app/models/email.rb b/app/models/email.rb
new file mode 100644
index 00000000000..22e71e4f107
--- /dev/null
+++ b/app/models/email.rb
@@ -0,0 +1,33 @@
+# == Schema Information
+#
+# Table name: emails
+#
+#  id          :integer          not null, primary key
+#  user_id     :integer          not null
+#  email       :string           not null
+#  created_at  :datetime         not null
+class Email < ActiveRecord::Base
+  attr_accessible :email, :user_id
+
+  #
+  # Relations
+  #
+  belongs_to :user
+  
+  #
+  # Validations
+  #
+  validates :user_id, presence: true
+  validates :email, presence: true, email: { strict_mode: true }, uniqueness: true
+  validate :unique_email, if: ->(email) { email.email_changed? }
+  
+  before_validation :cleanup_email
+
+  def cleanup_email
+    self.email = self.email.downcase.strip
+  end
+
+  def unique_email
+    self.errors.add(:email, 'has already been taken') if User.exists?(email: self.email)
+  end
+end
\ No newline at end of file