Rails - Jan 2007 - chapter 11, second edition.. little help please.

I have followed the examples in Chapter 11 page 147-155 and can''t get
the ''
Create User '' to work. I''m new to ruby so maybe there is a
syntax error or
something. Here is what I have and the error. Please let me know if you see
any mistakes.

Here is the error.

NoMethodError in Login#add_user

Showing app/views/login/add_user.rhtml where line #10 raised:

undefined method `password'' for #<User:0x2aa0abc>
Extracted source (around line #10):

7:         </p>
8:         <p>
9:         <label for="user_password">Password:</label>
10:         <%= form.password_field :password, :size => 40%>
11:         </p>
12:         <label
for="user_password_confirmation">Confirm:</label>
13:         <%= form.password_field :password_confirmation, :size =>
40%>

... Than the code ..

LOGIN CONTROLLER ....

class LoginController < ApplicationController

  layout "admin"

   def add_user
     @user = User.new(params[:user])
     if request.post? and @user.save
       flash.now[:notice] = "User #{@user.name} created successfully!"
       @user = User.new
     end
   end


USER.RB

require "digest/sha2"

class User < ActiveRecord::Base
  validate_presence_of :name
  validates_uniqueness_of :name

  attr_accessor :password_confirmation
  validates_confirmation_of :password


  def validate
    errors.add_to_base("Missing Something") if hashed_password.blank?
  end

  def self.authenticate(name, password)
     user = self.find_by_name(name)
     if user
       expected_password = encrypted_password(password, user.salt)
       if user.hashed_password != expected_password
         user = nil
       end
     end
     user
   end

  def password
    @password
  end

  def password=(pwd)
    @password = pwd
    create_new_salt
    self.hashed_password = User.encrypted_password(self.password, self.salt)
  end

  private

  def self.encrypted_password(password, salt)
    string_to_hash = password + "bobblehead" + salt #bobblehead to
random
the pass for security
    Digest::SHA256.hexdigest(string_to_hash)

  def create_new_salt
    self.salt = self.object_id.to_s + rand.to_s
  end
end
end

ADD_USER.RHTML

<fieldset>
    <legend>Create User</legend>
    <% form_for :user do |form| %>
        <p>
        <label for="user_name">Name:</label>
        <%= form.text_field  :name, :size => 40 %>
        </p>
        <p>
        <label for="user_password">Password:</label>
        <%= form.password_field :password, :size => 40%>
        </p>
        <label
for="user_password_confirmation">Confirm:</label>
        <%= form.password_field :password_confirmation, :size => 40%>
        </p>
        <p>
        <%= submit_tag "Add User", :class => "submit"
%></p>
    <% end %>
</fieldset>


-- 
-mike

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On Jan 16, 2007, at 2:06 PM, Michael Steinfeld wrote:
> I have followed the examples in Chapter 11 page 147-155 and can''t
> get the '' Create User '' to work. I''m new to ruby
so maybe there is
> a syntax error or something. Here is what I have and the error.  
> Please let me know if you see any mistakes.
>
> Here is the error.
>
> NoMethodError in Login#add_user
>
> Showing app/views/login/add_user.rhtml where line #10 raised:
>
> undefined method `password'' for #<User:0x2aa0abc>
> Extracted source (around line #10):

Here''s what I''d do:

Bring up script/console

Create a new user:  u = User.new

See if you can access the password attribute:  p u.password

It should return nil

If it works, then I''d try restarting your application: maybe the  
change wasn''t reloaded.

If it doesn;t work, then maybe you haven''t saved the change, or  
you''re working in a different source tree?


Dave
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well here is the error that baffled me when using script/console
>> mike = User.create(:name => "mike")
=> #<User:0x28cbdf4 @new_record=false,
@errors=#<ActiveRecord::Errors:0x28cad50 @base=#<User:0x28cbdf4 ...>,
@errors={}>, @attributes={"salt"=>nil,
"name"=>"mike",
"hashed_password"=>nil,
"id"=>20}>
>> mike.hashed_password = "foo"
=> "foo"
>> mike.salt
=> nil
>> mike.password
NoMethodError: undefined method `password'' for #<User:0x28cbdf4>
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/base.rb:1847:in
`method_missing''
        from (irb):25
>> mike
=> #<User:0x28cbdf4 @new_record=false,
@errors=#<ActiveRecord::Errors:0x28cad50 @base=#<User:0x28cbdf4 ...>,
@errors={}>, @attributes={"salt"=>nil,
"name"=>"mike",
"hashed_password"=>"foo",
"id"=>20}>
>> mike.hashed_password
=> "foo"

I did restart the server, that did seem to fix it, then I ran "rake
rails:update" oddly enough it worked after that

I had already downloaded the zip file and ran this after I created the
application. Is it coincedence after restarting the server?

thanks for your help.

mike



On 1/16/07, Dave Thomas <dave-kbbdpT5sCmpWk0Htik3J/w@public.gmane.org>
wrote:
>
>
> On Jan 16, 2007, at 2:06 PM, Michael Steinfeld wrote:
>
> I have followed the examples in Chapter 11 page 147-155 and can''t
get the
> '' Create User '' to work. I''m new to ruby so
maybe there is a syntax error or
> something. Here is what I have and the error. Please let me know if you see
> any mistakes.
>
> Here is the error.
>
> NoMethodError in Login#add_user
>
> Showing app/views/login/add_user.rhtml where line #10 raised:
>
> undefined method `password'' for #<User:0x2aa0abc>
> Extracted source (around line #10):
>
>
>
> Here''s what I''d do:
>
> Bring up script/console
>
> Create a new user:  u = User.new
>
> See if you can access the password attribute:  p u.password
>
> It should return nil
>
> If it works, then I''d try restarting your application: maybe the
change
> wasn''t reloaded.
>
> If it doesn;t work, then maybe you haven''t saved the change, or
you''re
> working in a different source tree?
>
>
> Dave
>
> >
>

-- 
-mike


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