Re: model issues with ruby on rails 3

amvis
2012-04-13T05:53:57Z

On Thursday, 12 April 2012 15:54:57 UTC-4, Colin Law
wrote:
>
>
> >
> >
> > On Thursday, 12 April 2012 10:54:35 UTC-4, Colin Law wrote:>
> >
> >     @user = User.find_by_user_name(user_name)
> >       if !@user.business_admins.nil?
> >             puts "Am here"
> >            @business_admin = @user.business_admins[0]
> >       end
> > class User < ActiveRecord::Base
> >   has_many :business_admins
> > end
> >
> > class BusinessAdmin < ActiveRecord::Base
> >   belongs_to :user
> > end
> >
> > Here what i am trying, I am using Mozilla rest-client, basically here
> > the
> > user_name found in the User table, But i didn''t put that id
in the
> > BusinessAdmin, So what the problem is  when i run the code, this if
> > !@user.business_admins.nil? will return true, because am getting this
> > "Am
> > here"
> >I am not sure what you are saying.  If you have user has_many
> >business_admins then @user.business_admins will never be nil.  It may
> >be an empty array however.  Perhaps you should be testing for the
> >array empty rather than nil.
> >Colin
> >
> > Basically, the BusinessAdmin doesn''t have that
use_name''s id, then why
> this
> > checking happned?
>
> >First what relationships have you got between the models (has_many,
> >belongs_to or whatever)?
>
> >As I said last time, if user has_many business_admins then
> >@user.business_admins will always (effectively) be an array, which may
> >be empty.  It will never be nil.
>
 * if !@user.business_admins[0].nil?*
           puts "Am here"
            @business_admin = @user.business_admins[0]
       end



> >By the way, you sent your last email to me instead of to the list.
> >Please make sure you reply to the list.
>
> >Colin
>
>
> >
> > if !@user.business_admins.nil?
> >              puts "Am here"
> >             @business_admin = @user.business_admins[0]
> >        end
> >
> >
>  Thank you
>  vishnu
>
>

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