Contents

class Comment < Content

  acts_as_role_context # :parent => Content

  filtered_column :body
  filters_attributes :sanitize => :body_html

  belongs_to :site
  belongs_to :section
  belongs_to :commentable, :polymorphic => true
  belongs_to_author

  validates_presence_of :body, :commentable

  before_validation :set_owners
  before_create :authorize_commenting
  after_save    :update_commentable
  after_destroy :update_commentable

  def owner
    commentable
  end

  def filter
    commentable.comment_filter
  end

  def unapproved?
    !approved?
  end

  def just_approved?
    approved_changed? and approved?
  end

  def just_unapproved?
    approved_changed? and unapproved?
  end
  
  def state_changes
    state_changes = if just_approved?
      [:approved]
    elsif just_unapproved?
      [:unapproved]
    end || []
    super + state_changes 
  end

  def spam_info
    read_attribute(:spam_info) || {}
  end

  has_many :spam_reports, :as => :subject

  def spam_threshold
    51 # TODO have a config option on site for this
  end

  def ham?
    spaminess < spam_threshold
  end

  def spam?
    spaminess >= spam_threshold
  end

  def check_approval(context = {})
    section.spam_engine.check_comment(self, context)
    self.spaminess = calculate_spaminess
    self.approved = ham?
    save!
  end

  def calculate_spaminess
    sum = spam_reports(true).inject(0){|sum, report| sum + report.spaminess }
    sum > 0 ? sum / spam_reports.count : 0
  end

  protected

    def authorize_commenting
      if commentable && !commentable.accept_comments?
        raise CommentNotAllowed, I18n.t(:'adva.comments.messages.not_allowed')
      end
    end

    def set_owners
      if commentable # TODO in what cases would commentable be nil here?
        self.site = commentable.site
        self.section = commentable.section
      end
    end

    def update_commentable
      owner.after_comment_update(self) if owner && owner.respond_to?(:after_comment_update)
    end

end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
emergent-core-0.1.0	rails_generators/emergent_config/templates/app/models/comment.rb
emergent-core-0.1.01	rails_generators/emergent_config/templates/app/models/comment.rb
emergent-core-0.1.02	rails_generators/emergent_config/templates/app/models/comment.rb