发布 2 小时后禁止修改话题（admin 可以修改）

目前找到代码如下 想仿照这个写，但是不知道怎么传入 topic.created_at

有没有懂得帮我指导一下，十分感谢！

已经解决了，具体如下

• setting.rb

  HOT_UPDATE_KEYS = %w[
  ...
  +   topic_delete_second
  ]
  ...
  scope :limits do
  field :rack_attack, type: :hash, default: {
    limit: 0,
    period: 3.minutes
  }
  
  field :newbie_limit_time, type: :integer, default: 0
  field :topic_create_limit_interval, type: :integer, default: 0
  field :topic_create_hour_limit_count, type: :integer, default: 0
  +    field :topic_delete_second, type: :integer, default: 0
  end
  

• application_helper.rb 新增一个函数

+  def time_edit(time)
+    return false if time.blank?
+    return true if Setting.topic_delete_second == 0
+    time.to_i +  Setting.topic_delete_second.to_i  > Time.now.to_i
+  end

• ability.rb

  def roles_for_topics
    unless user.newbie?
      can :create, Topic
    end
    can %i[favorite unfavorite follow unfollow], Topic
-    can %i[update open close], Topic, user_id: user.id
+    can %i[open close], Topic, user_id: user.id
    can :change_node, Topic, user_id: user.id, lock_node: false
+    can :update, Topic do |topic|
+      can_update = Setting.topic_delete_second == 0 ? true: ( topic.created_at.to_i + Setting.topic_delete_second.to_i > Time.now.to_i)
+      topic.user_id == user.id && can_update
+    end
    can :destroy, Topic do |topic|
      topic.user_id == user.id && topic.replies_count == 0
    end
  end

• 剩下的就是在按钮处调用 time_edit 这个函数判断是否有权限修改

• 最后在 admin 后台管理设置时间就可以了