1
我有表单,用户提交电子邮件,其在视图中:views/about/home.html.haml
未定义的方法`MODEL_NAME”的NilClass:类 - on Rails应用程序的红宝石
的形式如下:
= form_for @waitinglist do |f|
= f.email_field :email, placeholder: "Enter your email", autofocus: :true
= button_tag class: "btn btn-large btn-block btn-primary sigin-button" do
%p Put me on the waiting list
控制器看起来是这样的:
class WaitinglistsController < ApplicationController
def create
@waitinglist = Waitinglist.new(params[:waitinglist])
if @waitinglist.save
redirect_to root_path
else
render action: :new
end
end
def new
@waitinglist = Waitinglist.new
end
end
这个模型看起来是这样的:
class Waitinglist < ActiveRecord::Base
attr_accessible :email
validates :email, presence: true
end
但我收到此错误:
undefined method `model_name' for NilClass:Class
有什么不对?
应该工作..请张贴更多代码 – Lichtamberg
您必须在与views/about/home.html.haml相对应的控制器操作中定义'@ waitinglist'。 – Mischa
@Mischa你是说在about控制器?我应该怎样定义他们的? – SHUMAcupcake