ruby-on-rails - Michael Hartl 教程第 10 章的“找不到表 'microposts'”问题

Question

我正在尝试在 michael hartl 教程的第 10 章中创建一个 micropost 模型，但我无法通过 rspec 测试。

这是我所做的：

1. rails generate model Micropost content:string user_id:integer

2. rm -f spec/factories/microposts.rb

这是 db 迁移文件：

class CreateMicroposts < ActiveRecord::Migration
  def change
    create_table :microposts do |t|
      t.string :content
      t.integer :user_id

      t.timestamps
    end
    add_index :microposts, [:user_id, :created_at]
  end
end

这是 micropost 的模型规格：

require 'spec_helper'

describe Micropost do

  let(:user) { FactoryGirl.create(:user) }
  before do
    # This code is not idiomatically correct.
    @micropost = Micropost.new(content: "Lorem ipsum", user_id: user.id)
  end

  subject { @micropost }

  it { should respond_to(:content) }
  it { should respond_to(:user_id) }
end

然后我做了：

1. bundle exec rake db:migrate

2. bundle exec rake test:prepare

我的错误信息是这些：

1) Micropost
     Failure/Error: @micropost = Micropost.new(content: "Lorem ipsum", user_id: user.id)
     ActiveRecord::StatementInvalid:
       Could not find table 'microposts'
     # ./spec/models/micropost_spec.rb:8:in `new'
     # ./spec/models/micropost_spec.rb:8:in `block (2 levels) in <top (required)>'

2) Micropost
     Failure/Error: @micropost = Micropost.new(content: "Lorem ipsum", user_id: user.id)
     ActiveRecord::StatementInvalid:
       Could not find table 'microposts'
     # ./spec/models/micropost_spec.rb:8:in `new'
     # ./spec/models/micropost_spec.rb:8:in `block (2 levels) in <top (required)>'

架构

ActiveRecord::Schema.define(:version => 20130801225814) do

  create_table "users", :force => true do |t|
    t.string   "name"
    t.string   "email"
    t.datetime "created_at",                         :null => false
    t.datetime "updated_at",                         :null => false
    t.string   "password_digest"
    t.string   "remember_token"
    t.boolean  "admin",           :default => false
  end

  add_index "users", ["email"], :name => "index_users_on_email", :unique => true
  add_index "users", ["remember_token"], :name => "index_users_on_remember_token"

end

我无法弄清楚问题所在，因为我非常有信心我完全按照第 10 章中的步骤进行操作。也许是以前的东西？

谢谢你的帮助！

Answer 1

我认为应该bundle exec rake db:test:prepare代替bundle exec rake test:prepare