ruby - 我如何通过将current_user传递给Scope来确保它，从而仅给我关联关系数据

Question

在代码中，我在NotificationsController中具有Index方法

def index  
@notifications = Notification.role_ids_of_user(current_user).notifications_order_by_desc.page(params[:page])
# If i passed nil in place of current_user there should be some Error Handling How it Will done
end

在Notification.rb中

scope :role_ids_of_user, ->(current_user) { where(:role_id => current_user.pluck(:id),:state => "published") }

我想要一个可以处理Current_user身份验证的错误处理

Answer 1

在模型notification.rb中，您可以执行以下操作，而不是单行范围:

def self.role_ids_of_user(current_user)
  if current_user
    where(:role_id => current_user.id,:state => "published")
  else
    # throw your error or do whatever here
  end
end