Question

当我创建记录时，我有rake文件，对于作为引用的字段，它返回nil

namespace :winner do
  desc "Generate sitemap"
  task :create_winner => :environment do
binding.pry
      date = DateTime.now.utc
      likes = Like.where('created_at >= ? and created_at <= ?', 2.week.ago.beginning_of_week, 1.week.ago.end_of_week).select(:selfy_id)
      top = Selfy.where(id: likes)
      @user = top.order("COALESCE(likes_count, 0) DESC").limit(1).pluck(:user_id)
      @selfy = top.order("COALESCE(likes_count, 0) DESC").limit(1).pluck(:id)
    Winner.create(
    date: Time.now,
    user_id: @user,
    selfy_id: @selfy
    )
  end

end

Answer 1

您应该使用id或使用association

创建

Winner.create(date: Time.now, user: @user, selfy: @selfy)

或

Winner.create(date: Time.now, user_id: @user.id, selfy_id: @selfy.id)

使用create方法的rake文件

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