ruby-on-rails - 什么是“通道”以及它在哪里。我收到此错误 undefined method `channels' for nil:NilClass

Question

class ChannelsController < ApplicationController
  def index
    @channels = current_user.channels
    respond_with(@channels)
  end

  def new
    @channel = current_user.channels.build
    respond_with(@channel)
  end

  def create
    @channel = current_user.channels.build(params[:channel])
    @channel.save
    respond_with(@channel)
  end

  def show
    @channel = current_user.channels.find(params[:id])
    respond_with(@channel)
  end

  def edit
    @channel = current_user.channels.find(params[:id])
    respond_with(@channel)
  end

  def update
    @channel = current_user.channels.find(params[:id])
    @channel.update_attributes(params[:channel])
    respond_with(@channel)
  end

  private
  def current_user
    @current_user ||= User.find(params[:user_id])
  end
end

Answer 1

如果没有回溯，我猜这current_user可能nil意味着您没有登录或current_user行为不符合您的预期。试着调查一下。