Rails - Apr 2010 - ror noob need help with easy hidden_field question

I''m trying to save users the trouble of creating a username, so I am
generating it based on their email address.  It doesn''t need to be
unique, it is used in the view only, but that''s not my question.

My question is how do I store it when the user fills out the form?
Obviously, this won''t work, bc the user''s email isn''t
saved yet...any
help you can provide?  The line in ******* is the problem.  Thank you.

    - form_for resource_name, resource, :url =>
registration_path(resource_name) do |f|
      = f.error_messages

        = f.label :email
        = f.text_field :email

        = f.label :password
        = f.password_field :password

        = f.label :password_confirmation
        = f.password_field :password_confirmation

*************    = f.hidden_field_tag(:username,
@user.email.split(''@'',2).first)  ***********************

        = f.submit "Sign Up"
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> I''m trying to save users the trouble of creating a username, so I
am
> generating it based on their email address.  It doesn''t need to be
> unique, it is used in the view only, but that''s not my question.
>
> My question is how do I store it when the user fills out the form?
> Obviously, this won''t work, bc the user''s email
isn''t saved yet...any
> help you can provide?  The line in ******* is the problem.  Thank you.
>
>    - form_for resource_name, resource, :url =>
> registration_path(resource_name) do |f|
>      = f.error_messages
>
>        = f.label :email
>        = f.text_field :email
>
>        = f.label :password
>        = f.password_field :password
>
>        = f.label :password_confirmation
>        = f.password_field :password_confirmation
>
> *************    = f.hidden_field_tag(:username,
> @user.email.split(''@'',2).first)  ***********************
>
>        = f.submit "Sign Up"
Why do you need to put it into the form?  Seems like this would be a  
good spot for a before_save handler in your user model.  Check to see  
if the :username field is blank and if so, set it to the first bit of  
the email address...

-philip

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Philip Hallstrom wrote:
> Why do you need to put it into the form?  Seems like this would be a
> good spot for a before_save handler in your user model.  Check to see
> if the :username field is blank and if so, set it to the first bit of
> the email address...
> 
> -philip
Thanks!  before_save worked great!
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code for others:

class User < ActiveRecord::Base
  before_save :create_username
  private

  def create_username
    self.username = self.email.split(''@'',2).first
  end

end
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Sioux Sioux wrote:
> code for others:
> 
> class User < ActiveRecord::Base
>   before_save :create_username
>   private
> 
>   def create_username
>     self.username = self.email.split(''@'',2).first
>   end
> 
> end
So what happens when jim-YDxpq3io04c@public.gmane.org and
jim-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org both sign up?
Perhaps you should just use the whole address.

Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org
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