mateusmedeiros/redmine_revision_diff

module RedmineAllDiff
    module RepositoriesControllerPatch
        def self.included(base)
            base.send(:include, InstanceMethods)

            base.class_eval do
                unloadable

                before_filter :add_diff_info, :only => :revision
            end
        end

        module InstanceMethods
            def add_diff_info
                @diff_type = params[:type] || User.current.pref[:diff_type] || 'inline'

            @cache_key = "repositories/diff/#{@repository.id}/" +
                              Digest::MD5.hexdigest("#{@path}-#{@rev}-#{@rev_to}-#{@diff_type}-#{current_language}")
            unless read_fragment(@cache_key)
              @diff = @repository.diff(@path, @rev, @rev_to)
              show_error_not_found unless @diff
            end
            end
        end
    end
end