Rails - Jun 2006 - Custom Primary Key, Using Primary Key in Form "gives before_type_cast" error?

Hi guys,

I''ve got a problem here which i need help from the pro''s in
this mailing list

I have a legacy app where the User table has a custom structure where
"User_id" (username) is the primary key as well as the username used
to log in

User.rb (model)
class User < ActiveRecord::Base
  set_table_name "cmf901"
  set_primary_key "user_id"
end

Login Controller
class LoginController < ApplicationController
  def login
    @user = User.new
  end
end


When creating a Login form (login.rhtml)
<%= start_form_tag :action => "process" %>
<%= text_field ''user'', ''user_id'',
:MAXLENGTH =>"10" %>
<%= text_field ''user'', ''user_password'',
:MAXLENGTH =>"20" %>
<%= submit_tag "Login" %>
<%= end_form_tag %>


I get an error

NoMethodError in Login#login

Showing app/views/login/login.rhtml where line #11 raised:

undefined method `user_id_before_type_cast'' for #<User:0x3cb61e8>

Extracted source (around line #11):

8:   </tr>
9:   <tr>
10: 	<td>Username</td>
11: 	<td><%= text_field ''user'',
''user_id'', :MAXLENGTH =>"10"  %></td>
12:   </tr>
13:   <tr>
14: 	<td>Password</td>

All i want to do is use the standard rails way to create a login
form(used in Scaffold to create new/update) and do some authentication

John Wong wrote:
> I have a legacy app where the User table has a custom structure where
> "User_id" (username) is the primary key as well as the username
used
> to log in
> ....
> undefined method `user_id_before_type_cast'' for
#<User:0x3cb61e8>
> 11:     <td><%= text_field ''user'',
''user_id'', :MAXLENGTH =>"10"  %></td>
<%= text_field ''user'', ''id'', :maxlength
=> 10 %> should work, but
you should probably be using a non-AR form helper instead:

<%= text_field_tag ''user_id'', params[:user_id], :maxlength
=> 10 %>

@user = User.find_by_id(params[:user_id])


-- 
We develop, watch us RoR, in numbers too big to ignore.

Thx! Think that helped a lot..    I guess i''ll not use an AR form
helper..
too bad the nice form highlighting and error messages will have to go as well :(

On 6/14/06, Mark Reginald James <mrj@bigpond.net.au>
wrote:
> John Wong wrote:
>
> > I have a legacy app where the User table has a custom structure where
> > "User_id" (username) is the primary key as well as the
username used
> > to log in
> > ....
> > undefined method `user_id_before_type_cast'' for
#<User:0x3cb61e8>
> > 11:     <td><%= text_field ''user'',
''user_id'', :MAXLENGTH =>"10"  %></td>
>
> <%= text_field ''user'', ''id'',
:maxlength => 10 %> should work, but
> you should probably be using a non-AR form helper instead:
>
> <%= text_field_tag ''user_id'', params[:user_id],
:maxlength => 10 %>
>
> @user = User.find_by_id(params[:user_id])
>
>
> --
> We develop, watch us RoR, in numbers too big to ignore.
>
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