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db:reset をレーキすると、端末に次のエラーが表示され続けます。トピック オブジェクトが定義されていない理由がわかりません。トピック コントローラーとモデルを作成しました。コードは次のとおりです。 

NameError: undefined local variable or method `topics' for main:Object
/Users/ericpark/rails_projects/code/bloccit/db/seeds.rb:26:in `block in <top (required)>'
/Users/ericpark/rails_projects/code/bloccit/db/seeds.rb:23:in `times'
/Users/ericpark/rails_projects/code/bloccit/db/seeds.rb:23:in `<top (required)>'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in `load'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in `block in load'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in `load_dependency'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in `load'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/engine.rb:547:in `load_seed'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activerecord-4.2.0/lib/active_record/tasks/database_tasks.rb:250:in `load_seed'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:180:in `block (2 levels) in <top (required)>'
/Users/ericpark/.rvm/gems/ruby-2.2.0/gems/activerecord-4.2.0/lib/active_record/railties/databases.rake:139:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:setup => db:seed
Error

トピックコントローラー

class TopicsController < ApplicationController
  def index
    @topics = Topic.all
    #authorize @topics
  end

  def new
    @topic = Topic.new
    authorize @topic
  end

  def show
    @topic = Topic.find(params[:topic_id])
    #authorize @topic
  end

  def edit
    @topic = Topic.find(params[:id])
    authorize @topic
  end

  def create
     @topic = Topic.new(params.require(:topic).permit(:name, :description, :public))
     authorize @topic
     if @topic.save
       redirect_to @topic, notice: "Topic was saved successfully."
     else
       flash[:error] = "Error creating topic. Please try again."
       render :new
     end
   end

   def update
     @topic = Topic.find(params[:id])
     authorize @topic
     if @topic.update_attributes(params.require(:topic).permit(:name, :description, :public))
       redirect_to @topic
     else
       flash[:error] = "Error saving topic. Please try again."
       render :edit
     end
   end
end

トピックス モデル

class Topic < ActiveRecord::Base
  has_many :posts
end

Seed.rb

require 'faker'

5.times do
   user = User.new(
     name:     Faker::Name.name,
     email:    Faker::Internet.email,
     password: Faker::Lorem.characters(10)
   )
   user.skip_confirmation!
   user.save!
 end
 users = User.all

 #Create Topics
 15.times do
   Topic.create!(
     name:         Faker::Lorem.sentence,
     description:  Faker::Lorem.paragraph
   )
 end

 # Create Posts
 50.times do
   Post.create!(
    user:   users.sample,
      topic:  topics.sample,
    title:  Faker::Lorem.sentence,
    body:   Faker::Lorem.paragraph
   )
 end
 posts = Post.all

 # Create Comments
 100.times do
   Comment.create!(
      #We have not yet associated users with comments
     post: posts.sample,
     body: Faker::Lorem.paragraph
   )
 end

topics=Topic.all

 # user = User.first
 # user.skip_reconfirmation!
 # user.update_attributes!(
 #   email: 'erichoonpark@gmail.com',
 #   password: 'bullseye'
 # )

 admin = User.new(
  name: 'Admin User',
  email: 'admin@example.com',
  password: 'examplepass',
  role: 'admin'
 )
 admin.skip_confirmation!
 admin.save!

 moderator = User.new(
  name: 'Moderator',
  email: 'moderator@example.com',
  password: 'examplepass',
  role: 'moderator'
 )
 moderator.skip_confirmation!
 moderator.save!

 member = User.new(
  name: 'User',
  email: 'user@example.com',
  password: 'examplepass'
 )
 member.skip_confirmation!
 member.save!


 puts "Seed finished"
 puts "#{User.count} users created"
 puts "#{Post.count} posts created"
 puts "#{Comment.count} comments created"

ターミナルでトピックが定義されていない理由を誰かが説明できますか? topic.sample を作成するとき、正確には何をプルしていますか? コントローラーですか？

ありがとう！

4

1 に答える 1

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コントローラーとは関係ありません。topics何も定義されていないため、seeds.rb では定義されていません。あなたはおそらく設定するつもりでした

topics = Topic.all

トピックを作成した後topics.sample、その配列からランダムにトピックを返します

于 2015-03-30T20:25:17.767 に答える