README file

README.mdown

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+# Delegates Attributes To
+
+Simple association attributes delegator plugin. It automatically delegates association attributes accessors to a model. It also supports ActiveRecord::Dirty check for delegated attributes.
+
+[Original idea](http:https://www.kellerandfaber.com/writing/delegate_belongs_to-delegating-to-associations-in-rails) of the [plugin](http:https://github.com/faber/delegate\_belongs\_to)
+
+ class Contact
+  # firstname
+  # lastname
+ end
+
+ class Profile
+  # about
+  # hobby
+ end
+
+ class User
+  belongs_to :contact
+  delegates_attributes_to :contact
+
+  # or 
+  # delegate_belong_to :contact
+
+  has_one :profile
+  delegates_attributes_to :profile
+  
+  # or 
+  # delegate_has_one :profile
+  
+ end
+
+# Full ActiveRecord::Dirty check support for delegated attributes
+
+ u = User.first
+
+ u.firstname # => "Jonh"
+ u.firstname_changed? # => false
+ u.changed? # => false
+ u.firstname = 'Bob' 
+ u.firstname # => "Bob"
+ u.firstname_was # => "Jonh"
+ u.firstname_changed? # => true
+ u.changed? # => true
+ u.contact.changed? # => true
+
+ u = User.last
+
+ u.changed? # => false
+ u.profile.about = "Bob"
+ u.chaged? # => true
+
+ u = User.last
+
+ u.chaged? # => false
+ u.about = "Bob"
+ u.chaged? # => true
+ u.profile.chaged? # => true