Error on Ruby on Rails tutorial

Question

I try to do the Getting Started with Rails tutoriel and I have a problem I don't understand..

I trying to do the part 5.10 Adding Some Validation with the update function but i have an error "We're sorry, but something went wrong." and nothing else...

I'm sorry for all the code, but i'm a begginer and i realy don't know where is the error :/

The controller :

class ArticlesController < ApplicationController
def index
  @articles = Article.all
end

def new
  @article = Article.new()
end

def create
  @article = Article.new(article_params)

  if @article.save
    redirect_to @article
  else
    render 'new'
  end
end

def show
  @article = Article.find(params[:id])
end

def edit
  @article = Article.find(params[:id])
end 

def update
  @article = Article.find(params[:id])  
  if @article.update(article_params)
    redirect_to @article
  else
    render 'edit'
  end
end

private
  def article_params
    params.require(:article).permit(:title, :text)
  end

And if i delete the if/else/end on the update function, it's work (put an other error but not only the sorry message)

-----------------[ EDIT ]--------------------

I have read the log file and I think this line can help you :/

Started GET "/articles" for 127.0.0.1 at 2014-05-22 14:06:02 -0400

SyntaxError (C:/Users/Stephane/Desktop/rails_projects/fist_app/app/controllers/articles_controller.rb:32: invalid multibyte char (US-ASCII)
C:/Users/Stephane/Desktop/rails_projects/fist_app/app/controllers/articles_controller.rb:32: syntax error, unexpected $end, expecting keyword_end
    else
 ^):

Answer 1

You probably have an invisible control character in your text (perhaps from cut and paste). Try deleting the if/else statement and retype it by hand. I know this sounds strange but have seen this kind of thing happen many times.