server_log

NameError (uninitialized constant SortHelperPatch::InstanceMethods::SortCriteria):
  plugins/redmine_time_tracker/lib/sort_helper_patch.rb:15:in `sort_update_with_time_tracker'

sort_helper.rb

module SortHelper
  class SortCriteria

    def initialize
      @criteria = []
    end

    # <SOME OTHER METHODS>

  end

  def sort_update(criteria, sort_name=nil)
    sort_name ||= self.sort_name
    @sort_criteria = SortCriteria.new
    @sort_criteria.available_criteria = criteria
    @sort_criteria.from_param(params[:sort] || session[sort_name])
    @sort_criteria.criteria = @sort_default if @sort_criteria.empty?
    session[sort_name] = @sort_criteria.to_param
  end

  # <SOME OTHER METHODS OUTSIDE OF THE CLASS>
end

sort_helper_patch.rb

require_dependency 'sort_helper'

module SortHelperPatch

  def self.included(base)
    base.send(:include, InstanceMethods)
    base.class_eval do
      alias_method_chain :sort_update, :time_tracker
    end
  end

  module InstanceMethods
    def sort_update_with_time_tracker(criteria, sort_name=nil)
      sort_name ||= self.sort_name
      @sort_criteria = SortCriteria.new
      @sort_criteria.available_criteria = criteria
      @sort_criteria.from_param(params[:sort] || session[sort_name])
      @sort_criteria.criteria = @sort_default if @sort_criteria.empty?
      session[sort_name] = @sort_criteria.to_param
    end
end

SortHelper.send(:include, SortHelperPatch)