Rails Rspec error "undefined method" (railsturoial Chapter 10)

Question

I'm going through Michael Hartl's priceless tutorial and I got stuck with some Rspec errors. I've double checked everything but it seems like I'm still missing something. Here's what the error messages look like.

The thing that's bothering me the most is when I was generating the Microposts model I accidentally made a typo in one of the options so I did rails destroy model Microposts to undo the generate command before generating the model again. I'm wondering if that has anything to do with the errors I'm seeing.

I really wish to finish this tutorial ASAP so I can get on with building my own web application. ANY help would be appreciated.

Here's what my code looks like.

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 (User model)

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

Answer 1

The error is with this line:

@micropost = current_user.micropost.build(params[:micropost])

It should be:

@micropost = current_user.microposts.build(params[:micropost])

You're using micropost when you should be using microposts.