我正在阅读 Michael Hartl 的无价教程，但遇到了一些 Rspec 错误。我已经仔细检查了所有内容，但似乎我仍然缺少一些东西。这是错误消息的样子。
最困扰我的事情是，当我生成 Microposts 模型时，我不小心在其中一个选项中打错了，所以我在再次生成模型之前做了 rails destroy model Microposts 以撤消生成命令。我想知道这是否与我看到的错误有关。
我真的希望尽快完成本教程，以便继续构建自己的 Web 应用程序。任何帮助，将不胜感激。
这是我的代码的样子。
micropost_pages_spec.rb
require 'spec_helper'
describe "MicropostPages" do
subject {page}
let(:user) {FactoryGirl.create(:user)}
before {sign_in user}
describe "micropost creation" do
before {visit root_path}
describe "with invalid information" do
it "should not create a micropost" do
expect {click_button "Post"}.not_to change(Micropost, :count)
end
describe "error messages" do
before {click_button "Post"}
it {should have_content('error')}
end
end
end
end
microposts_controller.rb
class MicropostsController < ApplicationController
before_filter :signed_in_user, only: [:create, :destroy]
def create
@micropost = current_user.micropost.build(params[:micropost])
if @micropost.save
flash[:success] = "Micropost created!"
redirect_to root_path
else
render 'static_pages/home'
end
end
def destroy
end
end
static_pages_controller.rb
class StaticPagesController < ApplicationController
def home
@micropost = current_user.microposts.build if signed_in?
end
def help
end
def about
end
def contact
end
end
user.rb（用户模型）
class User < ActiveRecord::Base
attr_accessible :email, :name, :password, :password_confirmation
has_secure_password
has_many :microposts, dependent: :destroy
before_save {self.email.downcase!}
before_save :create_remember_token
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
validates :name, presence: true, length: {maximum: 50}
validates :email, presence: true, format: {with: VALID_EMAIL_REGEX},
uniqueness: {case_sensitive: false}
validates :password, presence: true, length: {minimum: 6}
validates :password_confirmation, presence: true
private
def create_remember_token
self.remember_token = SecureRandom.urlsafe_base64
end
end