refactored model validations to use newer rails 3 syntax

app/models/aspect.rb

@@ -10,9 +10,9 @@ class Aspect < ActiveRecord::Base
 
   has_many :aspect_visibilities
   has_many :posts, :through => :aspect_visibilities
+  
+  validates :name, :presence => true, :length => { :maximum => 20 }
 
-  validates_presence_of :name
-  validates_length_of :name, :maximum => 20
   validates_uniqueness_of :name, :scope => :user_id, :case_sensitive => false
 
   attr_accessible :name, :contacts_visible, :order_id

app/models/aspect_visibility.rb

@@ -5,9 +5,9 @@
 class AspectVisibility < ActiveRecord::Base
 
   belongs_to :aspect
-  validates_presence_of :aspect
+  validates :aspect, :presence => true
 
   belongs_to :post
-  validates_presence_of :post
+  validates :post, :presence => true
 
 end

app/models/comment.rb

@@ -25,9 +25,9 @@ class Comment < ActiveRecord::Base
 
   belongs_to :post
   belongs_to :author, :class_name => 'Person'
-
+  
-  validates_presence_of :text, :post
+  validates :text, :presence => true, :length => { :maximum => 2500 }
-  validates_length_of :text, :maximum => 2500
+  validates :post, :presence => true
 
   serialize :youtube_titles, Hash
 

app/models/contact.rb

@@ -7,7 +7,7 @@ class Contact < ActiveRecord::Base
   validates_presence_of :user
 
   belongs_to :person
-  validates_presence_of :person
+  validates :person, :presence => true
 
   has_many :aspect_memberships
   has_many :aspects, :through => :aspect_memberships

app/models/invitation.rb

@@ -13,7 +13,8 @@ class Invitation < ActiveRecord::Base
   before_validation :set_email_as_default_service
 
  # before_create :share_with_exsisting_user, :if => :recipient_id?
-  validates_presence_of :identifier, :service
+  validates :identifier, :presence => true
+  validates :service, :presence => true
   validate :valid_identifier?
   validate :recipient_not_on_pod?
   validates_presence_of :sender, :aspect, :unless => :admin?

app/models/like.rb

@@ -20,7 +20,8 @@ class Like < ActiveRecord::Base
   belongs_to :author, :class_name => 'Person'
 
   validates_uniqueness_of :target_id, :scope => [:target_type, :author_id]
-  validates_presence_of :author, :target
+  validates :author, :presence => true
+  validates :target, :presence => true
 
   after_create do
     self.target.update_likes_counter

app/models/mention.rb

@@ -5,8 +5,8 @@
 class Mention < ActiveRecord::Base
   belongs_to :post
   belongs_to :person
-  validates_presence_of :post
+  validates :post, :presence => true
-  validates_presence_of :person
+  validates :person, :presence => true
 
   after_destroy :delete_notification
 

app/models/message.rb

@@ -13,8 +13,8 @@ class Message < ActiveRecord::Base
 
   belongs_to :author, :class_name => 'Person'
   belongs_to :conversation, :touch => true
-
+  
-  validates_presence_of :text
+  validates :text, :presence => true
 
   after_create do
     #sign comment as commenter