RoR |如何让content_tags嵌套?

时间:2012-06-01 04:08:07

标签: ruby-on-rails ruby ruby-on-rails-3 ruby-on-rails-3.2

正如您所看到的,我有一个帮助器,其中包含一个我正在尝试渲染到视图的方法。

嵌套的content_tags不会呈现我对此标记的断开连接吗?

def draw_calendar(selected_month, month, current_date)
  content_tag(:table) do

    content_tag(:thead) do

      content_tag(:tr) do

        I18n.t(:"date.abbr_day_names").map{ |day| content_tag(:th, day, :escape => false) }

      end #content_tag :tr
    end #content_tag :thead 

    content_tag(:tbody) do 

      month.collect do |week| 

        content_tag(:tr, :class => "week") do

          week.collect do |date| 

            content_tag(:td, :class => "day") do

              content_tag(:div, date.day, :class => (Date.today == current_date ? "today" : nil))

            end #content_tag :td
          end #week.collect
        end #content_tag :tr
      end #month.collect
    end #content_tag :tbody 
  end #content_tag :table
end #draw_calendar

:::编辑:::

所以这就是有效的。再次感谢mu太短了!

def draw_calendar(selected_month, month, current_date)
  tags = []

  content_tag(:table) do

    tags << content_tag(:thead, content_tag(:tr, I18n.t("date.abbr_day_names").collect { |name| content_tag :th, name}.join.html_safe))

    tags << content_tag(:tbody) do 

      month.collect do |week| 

        content_tag(:tr, :class => "week") do

          week.collect do |date| 

            content_tag(:td, :class => "day") do

              content_tag(:div, :class => (Date.today == current_date ? "today" : nil)) do

                date.day.to_s

              end #content_tag :div
            end #content_tag :td
          end.join.html_safe #week.collect
        end #content_tag :tr
      end.join.html_safe #month.collect
    end #content_tag :tbody 
    tags.join.html_safe
  end #content_tag :table
end #draw_calendar

1 个答案:

答案 0 :(得分:9)

您的问题是content_tag希望其块返回一个字符串,您可以在代码中查看它是否使用CaptureHelper中的capture并忽略任何非字符串返回来自街区。

您需要将collect s变成字符串,如下所示:

content_tag(:tbody) do 
  month.collect do |week| 
    content_tag(:tr, :class => "week") do
      week.collect do |date|
        ..
      end.join.html_safe
    end
  end.join.html_safe
end

例如,像这样的帮手:

content_tag(:table) do
  content_tag(:thead) do
    content_tag(:tr) do
      [1,2,3,4].map do |i|
        content_tag(:td) do
          "pancakes #{i}"
        end
      end
    end
  end
end

产生

<table>
    <thead>
        <tr></tr>
    </thead>
</table>

但添加了.join.html_safe

content_tag(:table) do
  content_tag(:thead) do
    content_tag(:tr) do
      [1,2,3,4].map do |i|
        content_tag(:td) do
          "pancakes #{i}"
        end
      end.join.html_safe
    end
  end
end

产生预期的:

<table>
    <thead>
        <tr>
            <td>pancakes 1</td>
            <td>pancakes 2</td>
            <td>pancakes 3</td>
            <td>pancakes 4</td>
        </tr>
    </thead>
</table>