Redmine

    content =

      if value.is_a?(Array)

        values = value.collect {|v| column_value(column, item, v)}.compact

        safe_join(values, ', ')

      else

        column_value(column, item, value)

      end

    call_hook(:helper_queries_column_content,

              {:content => content, :column => column, :item => item})

    content

    content =

      case column.name

      when :id

        link_to value, issue_path(item)

      when :subject

        link_to value, issue_path(item)

      when :parent

        value ? (value.visible? ? link_to_issue(value, :subject => false) : "##{value.id}") : ''

      when :description

        item.description? ? content_tag('div', textilizable(item, :description), :class => "wiki") : ''

      when :last_notes

        item.last_notes.present? ? content_tag('div', textilizable(item, :last_notes), :class => "wiki") : ''

      when :done_ratio

        progress_bar(value)

      when :relations

        content_tag(

          'span',

          value.to_s(item) {|other| link_to_issue(other, :subject => false, :tracker => false)}.html_safe,

          :class => value.css_classes_for(item))

      when :hours, :estimated_hours, :total_estimated_hours

        format_hours(value)

      when :spent_hours

        link_to_if(value > 0, format_hours(value), project_time_entries_path(item.project, :issue_id => "#{item.id}"))

      when :total_spent_hours

        link_to_if(value > 0, format_hours(value), project_time_entries_path(item.project, :issue_id => "~#{item.id}"))

      when :attachments

        value.to_a.map {|a| format_object(a)}.join(" ").html_safe

      else

        format_object(value)

      end

    call_hook(:helper_queries_column_value,

              {:content => content, :column => column, :item => item, :value => value})

    content