simple refactoring

app/models/note.rb

@@ -2,10 +2,13 @@ require 'carrierwave/orm/activerecord'
 require 'file_size_validator'
 
 class Note < ActiveRecord::Base
-  mount_uploader  :attachment, AttachmentUploader
+
   attr_accessible :note, :noteable, :noteable_id, :noteable_type, :project_id,
                   :attachment, :line_code
 
+  attr_accessor :notify
+  attr_accessor :notify_author
+
   belongs_to :project
   belongs_to :noteable, polymorphic: true
   belongs_to :author, class_name: "User"
@@ -13,18 +16,17 @@ class Note < ActiveRecord::Base
   delegate :name, to: :project, prefix: true
   delegate :name, :email, to: :author, prefix: true
 
-  attr_accessor :notify
-  attr_accessor :notify_author
-
-  validates_presence_of :project
-
+  validates :project, presence: true
   validates :note, presence: true, length: { within: 0..5000 }
   validates :attachment, file_size: { maximum: 10.megabytes.to_i }
 
+  mount_uploader  :attachment, AttachmentUploader
+
+  # Scopes
   scope :common, where(noteable_id: nil)
   scope :today, where("created_at >= :date", date: Date.today)
   scope :last_week, where("created_at  >= :date", date: (Date.today - 7.days))
-  scope :since, lambda { |day| where("created_at  >= :date", date: (day)) }
+  scope :since, ->(day) { where("created_at  >= :date", date: (day)) }
   scope :fresh, order("created_at ASC, id ASC")
   scope :inc_author_project, includes(:project, :author)
   scope :inc_author, includes(:author)