Contents

module CortexReaver
  module Model
    # Support methods for comments on models
    module Comments
      def self.included(base)
        base.class_eval do
          # When we delete a model that has comments, remove the comments too.
          before_destroy(:drop_comments) do
            comments = self.comments
            remove_all_comments
            comments.each do |comment|
              comment.destroy
            end
          end

          # Refresh all comment counts
          def self.refresh_comment_counts
            all.each do |model|
              model.refresh_comment_count
            end
          end
        end
      end

      # Recalculates the number of comments on this record (and all comments
      # below it, recursively) and saves those values. Returns the comment
      # count on this record.
      def refresh_comment_count
        count = 0
        comments.each do |comment|
          # Recalculate for sub-comments and sum.
          count += comment.refresh_comment_count + 1
        end
        self[:comment_count] = count
        self.skip_timestamp_update = true

        # Save and return
        self.save
        self[:comment_count]
      end

      # Returns the parent of a given comment. Caches, pass true to refresh.
      def parent(refresh = false)
        if refresh or @parent_cache.nil?
          [:comment, :journal, :photograph, :project, :page].each do |p|
            if self.respond_to?(p) and parent = self.send(p)
              # We found an applicable parent.
              @parent_cache = parent
              return parent
            end
          end
          # We didn't find any parent
          nil
        else
          @parent_cache
        end
      end

      # Returns the top-level parent of a given comment.
      def root_parent
        if parent
          parent.root_parent
        else
          self
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
cortex-reaver-0.0.8	lib/cortex_reaver/support/comments.rb
cortex-reaver-0.0.9	lib/cortex_reaver/support/comments.rb