Rails - Sep 2006 - Having trouble with update_attributes() after member access

I''m having problems in a controller i am writing.  i get this
exception:
wrong number of arguments (1 for 0)

## this does not work:
    @voicemail_user = VoicemailUser.find(session[:asterisk][:user_id])

    if (@voicemail_user.password == params[:pwd][:current])
      @voicemail_user.update_attributes({"password" => 
params[:pwd][:newpwd2]})
    end

## but this works:
    @voicemail_user = VoicemailUser.find(session[:asterisk][:user_id])
    @voicemail_user.update_attributes({"password" => 
params[:pwd][:newpwd2]})


What am i doing wrong?

## application trace below:

c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/callbacks.rb:306:in
`callback''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/callbacks.rb:306:in
`valid?''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/validations.rb:735:in
`save_without_transactions''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/transactions.rb:126:in
`save''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/database_statements.rb:51:in
`transaction''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/transactions.rb:91:in
`transaction''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/transactions.rb:118:in
`transaction''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/transactions.rb:126:in
`save''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/base.rb:1439:in
`update_attributes''
#{RAILS_ROOT}/app/controllers/voicemail_users_controller.rb:135:in 
`user_pwd_change''
-e:4:in `load''
-e:4

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What line is 135:in `user_pwd_change'' ?


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Scott Meade wrote:
> What line is 135:in `user_pwd_change'' ?
I''ve got some help on #rubyonrails.  i''ll edit the OP with
this info.

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Khalid Zubair wrote:
> Scott Meade wrote:
>> What line is 135:in `user_pwd_change'' ?
> 
> I''ve got some help on #rubyonrails.  i''ll edit the OP
with this info.
OK, looks like i can''t edit my OP here (heh heh new to this forum).
I have a column called callback in my table.  callback is a method that 
is used by ActiveRecord and things go crazy when it is an attribute 
also.

I tried adding these methods as a work around to alias the callback 
column:

  def callback_column=(value);
    attributes["callback"] = value;
  end

  def callback_column
    attributes["callback"]
  end

but it doesn''t fix things like ["callback_column"] etc or
when i do a
VoicemailUser.content_columns to iterate over the hash.

is there a general purpose fix to alias column names when they conflict 
with rails?

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