Ben's questions

我试图在网格中放置一个带有 overflow-x-auto 的 div，但该 div 仍然最大，因为父级尺寸为 max-w-2xl。

<main class="grid mx-auto mt-20 min-h-screen w-full max-w-2xl gap-16 bg-gray-100 px-4 pt-4 sm:px-6 sm:pt-6 lg:px-8 lg:pt-8">
  <section class="mb-20">
    <div class="w-full overflow-x-auto">
      <div class="flex space-x-4 pb-4">
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
        <div class="h-36 w-48 flex-shrink-0 rounded-lg bg-red-300"></div>
      </div>
    </div>
  </section>
</main>

https://play.tai​​lwindcss.com/HpULo02BYA

更新时，如果先前的值=！我正在尝试发送电子邮件 发布并发布新值。我尝试了 after_save、before_action...

如果例如

@ad.status ==“待处理”并更新为“已发布”

@ad.status_was != '已发布' 返回 true

  class Shop::AdsController < Admin2Controller
    before_action :set_ad, only: %i[edit update destroy]
    before_action :send_notification_if_published, only: :update

    def send_notification_if_published
      return unless @ad.status_was != 'published' && @ad.status_published?
      notification = Notification.find_by(action: 'ad_published')

      subscribed_users = User.joins(:notification_preferences)
                             .where(notification_preferences: { notification_id: notification.id })

      subscribed_users.each do |user|
        NotificationsMailer.new(user, notification, self).deliver_later
      end
    end
  end