cs_comments_service/api/comments.rb

get "#{APIPREFIX}/comments/:comment_id" do |comment_id|
  @comment = comment
  comment_hash = @comment.to_hash(recursive: bool_recursive)
  verify_or_fix_cached_comment_count(@comment, comment_hash)
  comment_hash.to_json
end

put "#{APIPREFIX}/comments/:comment_id" do |comment_id|
  filter_blocked_content params["body"]
  updated_content = params.slice(*%w[body endorsed])
  if params.has_key?("endorsed")
    new_endorsed_val = Boolean.mongoize(params["endorsed"])
    if new_endorsed_val != comment.endorsed
      if params["endorsement_user_id"].nil?
        endorsement = nil
      else
        endorsement = {:user_id => params["endorsement_user_id"], :time => DateTime.now}
      end
      updated_content["endorsement"] = new_endorsed_val ? endorsement : nil
    end
  end
  comment.update_attributes(updated_content)
  if comment.errors.any?
    error 400, comment.errors.full_messages.to_json
  else
    comment.to_hash.to_json
  end
end

post "#{APIPREFIX}/comments/:comment_id" do |comment_id|
  filter_blocked_content params["body"]
  sub_comment = comment.children.new(params.slice(*%w[body course_id]))
  sub_comment.anonymous = bool_anonymous || false
  sub_comment.anonymous_to_peers = bool_anonymous_to_peers || false
  sub_comment.author = user
  sub_comment.comment_thread = comment.comment_thread
  sub_comment.child_count = 0
  sub_comment.save
  if sub_comment.errors.any?
    error 400, sub_comment.errors.full_messages.to_json
  else
    comment.update_cached_child_count
    if comment.errors.any?
      error 400, comment.errors.full_messages.to_json
    else
      user.subscribe(comment.comment_thread) if bool_auto_subscribe
      sub_comment.to_hash.to_json
    end
  end
end

delete "#{APIPREFIX}/comments/:comment_id" do |comment_id|
  parent_id = comment.parent_id
  comment.destroy
  unless parent_id.nil?
    begin
      parent_comment = Comment.find(parent_id)
      parent_comment.update_cached_child_count
    rescue Mongoid::Errors::DocumentNotFound
      pass
    end
  end
  comment.to_hash.to_json
end