class Patterns::User

User -> Subject

An example class to show how the Subject functions in the Observer pattern This model uses Inheritance, but Object Composition is possible as well

Public Class Methods

new(user_name, email, password) click to toggle source

Initializes the User class and the Subject superclass

user_name - The user's username
email - The user's email
password - The user's password

Examples

=> user = User.new('test_user', 'test@sessionm.com', 'test_password')

Calls superclass method Patterns::Subject.new

# File app/models/observer/user.rb, line 18
def initialize(user_name, email, password)
  super()
  @user_name = user_name
  @email = email
  @password = password
end

Public Instance Methods

change_password(new_password) click to toggle source

Changes a user password and notifies all of its observers

new_password - The new password to change the user's password to

Examples

=> user.change_password('new_password')

# File app/models/observer/user.rb, line 32
def change_password(new_password)
  @password = new_password
  notify("Password changed for user: #{@user_name}", 'PasswordChange')
end

notify(notification, event) click to toggle source

Notifies the superclass of an event, which in turn notifies all of its observers

notification - The notification to send to the superclass
event - The event to send to the superclass

Examples

=> notify('User password changed', 'PasswordChange')

Calls superclass method Patterns::Subject#notify

# File app/models/observer/user.rb, line 45
def notify(notification, event)
  super(notification, event)
end