work off today

app/models/employee.rb

@@ -23,9 +23,11 @@ class Employee
   property :unconfirmed_email
 
   property :name
+  property :authentication_token
   #property :email
 
   has_many :employee_shifts, dependent: :destroy
+  view :by_authentication_token, key: :authentication_token
   view :by_email, key: :email
 
   class << self
@@ -57,9 +59,41 @@ class Employee
     #settings.persist!
     #orig_save(*args)
   #end
-  before_save { settings.persist! }
+  before_save do
+    ensure_authentication_token
+    settings.persist!
+  end
 
   def settings
     @settings || SupplierEmployeesSettings.new(Supplier.new).for_employee(self)
   end
+
+  #####################################
+  # Taken from devise 2.2
+  #####################################
+
+  # Generate new authentication token (a.k.a. "single access token").
+  def reset_authentication_token
+    self.authentication_token = self.class.authentication_token
+  end
+
+  # Generate new authentication token and save the record.
+  def reset_authentication_token!
+    reset_authentication_token
+    save(:validate => false)
+  end
+
+  # Generate authentication token unless already exists.
+  def ensure_authentication_token
+    reset_authentication_token if authentication_token.blank?
+  end
+
+  # Generate authentication token unless already exists and save the record.
+  def ensure_authentication_token!
+    reset_authentication_token! if authentication_token.blank?
+  end
+
+  def self.authentication_token
+    SecureRandom.hex(24)
+  end
 end