Rails - NoMethoderror: Undefined method

Question

我正在制作一个项目，允许用户按照 BinaryThistle 的教程 Here

select 他们正在参与的活动

输入“/users/1/edit”后，我收到以下错误：

NoMethodError in UsersController#edit
undefined method `userevents' for #<User:0x0000000c31f450>
app/controllers/users_controller.rb:14:in `edit'

我可以正确查看“/users/1”，没有任何错误。我也试过重新启动我的服务器和运行 rake db:migrate.

users_controller.rb:

class UsersController < ApplicationController
def current_user
    @current_user ||= User.find_by(id: session[:user_id])
end

helper_method :current_user

def show

end

def edit
    @all_events = Event.all
    @user_events = current_user.userevents.build
end

def update
    redirect_to current_user
end   
end

user.rb

class User < ActiveRecord::Base
class << self
    def from_omniauth(auth_hash)
        user = find_or_create_by(uid: auth_hash['uid'], provider: auth_hash['provider'])
        user.name = auth_hash['info']['name']
        user.location = auth_hash['info']['location']
        user.image_url = auth_hash['info']['image']
        user.url = auth_hash['info']['urls']['user.provide.capitalize']
        user.email = auth_hash['info']['email']
        user.school = nil
        has_many :userevents
        has_many :events, :through => :userevents
        user.save!
        user
    end
end
end

userevent.rb

class Userevent < ActiveRecord::Base
belongs_to :user
belongs_to :event
end

event.rb

class Event < ActiveRecord::Base
has_many :userevents
has_many :users, :through => :userevents
end

请帮忙！

Answer 1

您必须在 User class 中定义 has_many :userevents。

Answer 2

将两个 has_many 关系放在方法之外。把它写在这一行下面"class User < ActiveRecord::Base"。希望对你有用

Rails - NoMethoderror: Undefined method

Rails - NoMethoderror: Undefined method

ruby-on-rails

ruby

has-many

belongs-to