hi, i’m very new to RoR,
i’m following an example on the book (Agile Web D. with Rails
2nd ed.)
i met an error that goes like this (even though i followed the book word
for word)
ArgumentError in Login#add_user
Showing app/views/login/add_user.rhtml where line #16 raised:
wrong number of arguments (0 for 1)
Extracted source (around line #16):
13:
14:
15: Password:
16: <%= form.password_field :password, :size => 40 %>
17:
18:
19:
here are my .rb and .rhtml
add_user.rhtml:
<%= error_messages_for ‘user’ %>
Enter User Details<% 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>
<p>
<label for="user_password_confirmation">Confirm:</label>
<%= form.password_field :password_confirmation, :size => 40 %>
</p>
<%= submit_tag "Add User", :class => "submit" %>
<% end %>
login_controller.rb:
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”
@user = User.new
end
end
def login
end
def logout
end
def index
end
def delete_user
end
def list_user
end
end
user.rb:
require ‘digest/sha1’
class User < ActiveRecord::Base
validates_presence_of :name
validates_uniqueness_of :name
attr_accessor :password_confirmation
validates_confirmation_of :password
def validate
errors.add_to_base(“Missing password!!!” ) 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 + "wibble" + salt
Digest::SHA1.hexdigest(string_to_hash)
end
def create_new_salt
self.salt = self.object_id.to_s + rand.to_s
end
end
Thanks alot in advance, i’m really lost here!