jquery - Rails validates a field that isn't included in page -

i have sample app created , i'm having trouble editing fields. whenever try , update fields, it's triggers "validates :password_confirmation" in user model though haven't included password_confirmation field in page.

here of codes:

this 'pages/services.html.erb' display data

<h1>shows users</h1>  <% if current_user %>  <table border="1"> <% @column_names.each |column_name| %>     <% if column_name == "name" || column_name == "username" || column_name == "email"%>         <td>             <strong><%= column_name.capitalize %></strong>               </td>     <% end %> <% end %>  <% @users.each |user| %>       <tr>         <td><%= user.name%></td>         <td><%= user.username%></td>         <td><%= user.email%></td>         <td><%= link_to "edit", edit_user_path(user)%></td>         <td><%= link_to "delete", '#'%></td>                 </tr> <%end%>  </table>  <% end %> 

and here's 'users/edit.html.erb'. have users model fyi.

edit

<%= form_for @user |f| %>     <%= render 'shared/error_message' %>     <p>         <%= f.text_field :name%><br/>         <%= f.label :name %><br/>     </p>      <p>         <%= f.text_field :username %><br/>         <%= f.label :username%><br/>     </p>      <p>         <%= f.email_field :email%><br/>         <%= f.label :email %><br/>     </p>      <p> <%= f.submit "update" %></p>   <% end%> 

and here's userscontroller code:

class userscontroller < applicationcontroller    def new     @user = user.new     @title = "user sign up"       end    def create      @user = user.new(params[:user])       if @user.save       sign_in_check @user       redirect_to root_path, :flash => { :success => "welcome bakeshop"}     else       @title = "user sign up"        render 'new'     end     end    def edit     @user = user.find(params[:id])   end    def update     @user = user.find(params[:id])      if @user.update_attributes(params[:user])       redirect_to pages_services_path, :notice => "update successful"     else       render "edit"     end   end   end 

can explain phenomenon , suggest fix?

edit

added user.rb file code:

class user < activerecord::base   require 'digest/md5'    attr_accessible :password_confirmation, :name, :email, :password, :username   before_save :encrypt_password     validates :name,  :presence => true,                     :length => { :maximum => 25}    validates :username,  :presence => true,                         :length => { :maximum => 25},                         :uniqueness => {:case_sensitive => false}                        validates :email, :presence => true,                     :uniqueness => {:case_sensitive => false}    validates :password, :presence => true,              :confirmation => true,             :length => {:within => 6..40}    validates :password_confirmation, :presence => true    def self.authenticate(username, password)     user = user.find_by_username(username)      if user && user.password == digest::md5.hexdigest(password)       user     else       nil     end   end    def encrypt_password     self.password = digest::md5.hexdigest(password)   end end 

i think problem might here:

  validates :password, :presence => true,              :confirmation => true,  #confirm 1             :length => {:within => 6..40}    validates :password_confirmation, :presence => true  #confirm 2 

in first validates block, code i've marked confirm 1 doing same thing code i've marked confirm 2. first block need when there's field password, code automatically confirm it.

the second bit causing error because not associated password field explicitly , you're asking rails confirm presence of :password_confirmation attribute before user created or updated, unnecessary. make sense?