控制器方法不起作用：如何在相关模型中查找相关记录？

Question

我有一个与组织模型相关的成员模型：1个组织有许多成员。在下面的控制器方法中，我尝试在第3行中找到一个组织，将其状态设置为在线激活。

但是，在运行测试时，我收到错误消息 def edit member = Member.find_by(email: params[:email]) organization = Organization.find_by(params[:member.organization_id]) if member && !member.activated? && member.authenticated?(:activation, params[:id]) member.activate log_in("member", member) flash[:success] = "Account activated! You can now update your profile." redirect_to member organization.update_attributes(activated: true) unless organization.activated? elsif user && !user.activated? && user.authenticated?(:activation, params[:id]) user.activate log_in("user", user) flash[:success] = "Account activated! You can now update your profile." redirect_to user else flash[:danger] = "Invalid activation link" redirect_to root_url end end 。我不认为那个成员是零。可能导致这种情况的任何想法？

^[^\.]*[a-zA-Z]+$

Answer 1

member = Member.find_by(email: params[:email])
organization = Organization.find_by(params[:member.organization_id])

你已经拥有member，ActiveRecord::Associations会做出魔术：

member = Member.find_by(email: params[:email])
if member
  organization = member.organization
else
  #whatever
end

Answer 2

你在这条线上有一个错字。而不是打电话

organization = Organization.find_by(params[:member.organization_id])

您需要直接致电member.oranization_id

organization = Organization.find_by(member.organization_id)

然而，使用活动记录关联功能

可以进一步简化这一点

organization = member.organization