rails routing syntax errors - ruby-on-rails

Question

I am working on Michael Hartl's tutorial at railstutorial.org. I am having Difficulty In chapter 5 with getting the routing to work.
If I start with a routes file
routes.rb
Rails.application.routes.draw do
root 'static_pages#home'
get 'static_pages/help'
get 'static_pages/about'
get 'static_pages/contact'
for each of these there is a test like
static_pages_controller_test.rb
test "should get home" do
get :home
assert_response :success
assert_select "title", "Ruby on Rails Tutorial Sample App"
end
this syntax works and all the tests pass but later he wants to change the syntax using the *_path convention.
so now the tests look like
class StaticPagesControllerTest < ActionController::TestCase
test "should get home" do
get root_path
.
.
end
test "should get help" do
get help_path
.
.
end
and I updated the routes to
root 'static_pages#home'
get '/help', to: 'static_pages#help'
get '/about', to: 'static_pages#about'
get '/contact', to: 'static_pages#contact'
but now all the tests fail with the messages
ERROR["test_should_get_home", StaticPagesControllerTest, 2016-06-30 05:02:41 -0700]
test_should_get_home#StaticPagesControllerTest (1467288161.43s)
ActionController::UrlGenerationError: ActionController::UrlGenerationError:
No route matches {:action=>"/", :controller=>"static_pages"}
ERROR["test_should_get_help", StaticPagesControllerTest, 2016-06-30 05:02:41 -0700]
test_should_get_help#StaticPagesControllerTest (1467288161.43s)
ActionController::UrlGenerationError: ActionController::UrlGenerationError:
No route matches {:action=>"/help", :controller=>"static_pages"}
my controller looks something like this
class StaticPagesController < ApplicationController
def home
end
def help
end
.
.
end
if I run rake routes I get
Prefix Verb URI Pattern Controller#Action
root GET / static_pages#home
help GET /help(.:format) static_pages#help
about GET /about(.:format) static_pages#about
contact GET /contact(.:format) static_pages#contact
what am I doing wrong?

Answer 1

You need to rewrite these routes so that it can create dynamic route helpers for you as per your test. Write it like,
get 'static_pages/help' , as: :help
get 'static_pages/about' , as: :about
get 'static_pages/contact' , as: :contact
Read 3.6 Naming Routes.
As per your current route, those *_path will be like static_pages_about, static_pages_help etc. I am not sure how did you get the rake routes output like you have shown without using as option.

Answer 2

Yes Author has updated rails tutorials with 5.0.0 last week. It is suggested you update it too which will make further journey more pleasant and error free in addition to that, you will get more new things to learn in 5.0.0
update your tests/controllers/static_pages_controller_test.rb
require 'test_helper'
class StaticPagesControllerTest < ActionDispatch::IntegrationTest
test "should get home" do
get root_path
assert_response :success
assert_select "title", "Ruby on Rails Tutorial Sample App"
end
test "should get help" do
get help_path
assert_response :success
assert_select "title", "Help | Ruby on Rails Tutorial Sample App"
end
test "should get about" do
get about_path
assert_response :success
assert_select "title", "About | Ruby on Rails Tutorial Sample App"
end
test "should get contact" do
get contact_path
assert_response :success
assert_select "title", "Contact | Ruby on Rails Tutorial Sample App"
end
end
I am sure once you update your tests/controllers/static_pages_controller_test.rb you will see green test $ rails test

Answer 3

I'm not so sure, but what happens if you do this:
root 'static_pages#home'
get 'help', to: 'static_pages#help'
get 'about', to: 'static_pages#about'
get 'contact', to: 'static_pages#contact'