如何在 Helper for CSS 中 == 建模方法 Class？

Question

calendar_helper

def day_classes(day)
  classes = []
  classes.empty? ? nil : classes.join(" ")
  classes << "future" if day > Date.today # This make future days a white background, by default days are blue background
  # The Below Line Gives an Error (I want missed_dates date_missed to be red background): 
  classes << "missed" if day == current_user.missed_dates.group_by {|i| i.date_missed.to_date}
end

页面中的名称错误#home

undefined local variable or method 'current_user'

css

.future { background-color: #FFF; }
.missed { background-color: red; }

我用 railscasts tutorial 建立了日历。

Answer 1

将此行添加到您的 Calendar class:

delegate :current_user, to: :view

由于 SessionsHelper 自动包含在视图中，它应该能够将您的 view 变量传递给您的 Calendar class.

Thank you that removed the error, but for some reason the days that I marked as date_missed didn't turn red

我猜 current_user.missed_dates.group_by {|i| i.date_missed.to_date} 是一个错过日期的数组，因此，为了检查您的日期是否在该数组中，请使用 include?:

missed_dates = current_user.missed_dates.group_by {|i| i.date_missed.to_date}
classes << "missed" if missed_dates.include?(day)

如何在 Helper for CSS 中 == 建模方法 Class？

How to == Model Method Class in Helper for CSS?

html

css

ruby-on-rails

ruby

helper