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path: root/app/models/blog_post.rb
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class BlogPost < ActiveRecord::Base
  
  default_scope :order => 'published_at DESC'
  
  has_many :comments, :class_name => 'BlogComment', :dependent => :destroy
  
  has_many :categorizations
  has_many :categories, :through => :categorizations, :source => :blog_category

  acts_as_indexed :fields => [:title, :body]

  validates :title, :presence => true, :uniqueness => true
  validates :body,  :presence => true

  has_friendly_id :title, :use_slug => true

  scope :by_archive, lambda { |archive_date|
    where(['published_at between ? and ?', archive_date.beginning_of_month, archive_date.end_of_month])
  }
  
  scope :by_year, lambda { |archive_year|
    where(['published_at between ? and ?', archive_year.beginning_of_year, archive_year.end_of_year])
  }

  scope :all_previous, lambda { where(['published_at <= ?', Time.now.beginning_of_month]) }

  scope :live, lambda { where( "published_at <= ? and draft = ?", Time.now, false) }

  scope :previous, lambda { |i| where(["published_at < ? and draft = ?", i.published_at, false]).limit(1) }
  # next is now in << self
  
  def next
    BlogPost.next(self).first
  end

  def prev
    BlogPost.previous(self).first
  end

  def live?
    !draft and published_at <= Time.now
  end

  def category_ids=(ids)
    self.categories = ids.reject{|id| id.blank?}.collect {|c_id|
      BlogCategory.find(c_id.to_i) rescue nil
    }.compact
  end

  class << self
    def next current_record
      self.send(:with_exclusive_scope) do
        where(["published_at > ? and draft = ?", current_record.published_at, false]).order("published_at ASC")
      end
    end
    
    def comments_allowed?
      RefinerySetting.find_or_set(:comments_allowed, true, {
        :scoping => 'blog'
      })
    end
    
    def uncategorized
      BlogPost.live.reject { |p| p.categories.any? }
    end
  end

  module ShareThis
    DEFAULT_KEY = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

    class << self      
      def key
        RefinerySetting.find_or_set(:share_this_key, BlogPost::ShareThis::DEFAULT_KEY, {
          :scoping => 'blog'
        })
      end

      def enabled?
        key = BlogPost::ShareThis.key
        key.present? and key != BlogPost::ShareThis::DEFAULT_KEY
      end
    end
  end

end