Ruby on Rails - 在助手中仅显示当前和未来月份

Question

我有这个助手，可以在 select 输入中显示事件模型中的月份和年份。我如何只显示当前和未来的月份而不显示过去的月份？

def select_month_tag(events)
  html = <<-HTML
  <select id="filtro-mes-ano" class="event-filter selectCustom2 event_filter_select">
    <option value="Filtrar por mês" disabled selected >Filtrar por mês</option>
  HTML

  events.each do | event |
    if not date_and_month(event.month_ref, event.year_ref).blank?
      html += <<-HTML
        <option data-year="#{event.year_ref}"
          data-month="#{event.month_ref}"
          "#{'selected' if is_hash_selected?(event)}">
          date_and_month(event.month_ref, event.year_ref)}
        </option>
      HTML
    end
  end

  html += <<-HTML
  </select>
  HTML

  html.html_safe
end

谢谢。

Answer 1

我猜你会为你编写的那种代码做这样的事情。让我知道它是否适合你

def select_month_tag(events)
  html = <<-HTML
  <select id="filtro-mes-ano" class="event-filter selectCustom2 event_filter_select">
    <option value="Filtrar por mês" disabled selected >Filtrar por mês</option>
  HTML

  events.each do | event |
    if not date_and_month(event.month_ref, event.year_ref).blank?
      # Get today's date
      today = Date.today

      # check if event year is greater than present date's year
      if event.year_ref >= today.year

        # check if event month is greater than present date's month
        if event.month_ref >= today.month # considering month_ref is a number between 1..12
          html += <<-HTML
            <option data-year="#{event.year_ref}"
              data-month="#{event.month_ref}"
              "#{'selected' if is_hash_selected?(event)}">
              date_and_month(event.month_ref, event.year_ref)}
            </option>
          HTML
        end
      end
    end
  end

  html += <<-HTML
  </select>
  HTML

  html.html_safe
end

Answer 2

为什么不过滤 Event 集合，然后用它创建选项？我认为您不希望助手中有这么多逻辑。最好在模型上做一个范围，然后使用它。像

Event.where('date > ?', date_variable_here)

Can you do greater than comparison on a date in a Rails 3 search?

Ruby on Rails - 在助手中仅显示当前和未来月份

Ruby on Rails - Show only current and future months in helper

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