css - 在 Rails 中计算日历一个月中的周数

Question

我有一个显示当月公共(public)事件的日历。这是一个响应式布局，所以我需要能够计算 week_row 的高度。因此，我需要能够计算该月的周数，包括部分周(包含当月和上月/下月天数的周)。

以下方法计算一个月中的周数:

def weeks_in_month(date)
  @week_count = (0.5 + (date.end_of_month.day + date.beginning_of_month.wday).to_f / 7.0).round
end

以及将适当的类添加到 <div> 的代码是:

def week_rows
   weeks.map {|week|
     content_tag :div, class: week_classes(week) do
       week.map { |day| day_cell(day) }.join.html_safe
     end
   }.join.html_safe
end

def week_classes(date)
  classes = ['week']
  classes << "wk_rows_4" if weeks_in_month(date) == 4
  classes << "wk_rows_5" if weeks_in_month(date) == 5
  classes << "wk_rows_6" if weeks_in_month(date) == 6
  classes.empty? ? nil : classes.join(" ")
end

但是，我错过了一些东西。除了默认的 'week' 之外，week_classes 没有填充任何东西。类。

这是基于 RailsCasts #213，根据 this tutorial 修改的关于创建没有表格的日历，这也大量借鉴了 RC#231。

知道为什么它没有将正确的类分配给 <div> ？

日历中的其他一切正常。完整代码如下:

module CalendarHelper
  def calendar(date = Date.today, &block)
    Calendar.new(self, date, block).calendar_div
  end

  class Calendar < Struct.new(:view, :date, :callback)
    HEADER = %w[Sunday Monday Tuesday Wednesday Thursday Friday Saturday]
    START_DAY = :sunday

    delegate :content_tag, to: :view

    def calendar_div
       content_tag 'div', id: "calendar" do
          header + week_rows
       end
    end

    def header
       content_tag 'div', id: 'weekdays' do
          HEADER.map { |day| content_tag :div, class: 'weekday' do
             day
          end }.join.html_safe
       end
    end

    def week_rows
       weeks.map {|week|
          content_tag :div, class: week_classes(week) do
             week.map { |day| day_cell(day) }.join.html_safe
          end
       }.join.html_safe
    end

    def week_classes(date)
       classes = ['week']
       classes << "wk_rows_4" if weeks_in_month(date) == 4
       classes << "wk_rows_5" if weeks_in_month(date) == 5
       classes << "wk_rows_6" if weeks_in_month(date) == 6
       classes.empty? ? nil : classes.join(" ")
    end

    def day_cell(day)
       content_tag :div, view.capture(day, &callback), class: day_classes(day)
    end

    def day_classes(day)
       classes = ['day']
       classes << "today" if day == Date.today
       classes << "notmonth" if day.month != date.month
       classes << "month" if day.month == date.month
       classes.empty? ? nil : classes.join(" ")
    end

    def weeks
       first = date.beginning_of_month.beginning_of_week(START_DAY)
       last = date.end_of_month.end_of_week(START_DAY)
       (first..last).to_a.in_groups_of(7)
    end

    def weeks_in_month(date)
       @week_count = (0.5 + (date.end_of_month.day + date.beginning_of_month.wday).to_f / 7.0).round
    end
  end

Answer 1

好的，所以一些摆弄引导我找到这个解决方案:

  def week_rows
     weeks.map {|week|
        content_tag :div, class: week_classes do
           week.map { |day| day_cell(day) }.join.html_safe
        end
     }.join.html_safe
  end

  def week_classes
     classes = ['week']
     classes << "wk_rows_4" if weeks_in_month == 4
     classes << "wk_rows_5" if weeks_in_month == 5
     classes << "wk_rows_6" if weeks_in_month == 6
     classes.empty? ? nil : classes.join(" ")
  end

  def weeks_in_month
     (0.5 + (date.end_of_month.day + date.at_beginning_of_month.wday).to_f / 7.0).round
  end

没有必要将 (date) 作为参数传入。