Rails - Jun 2009 - modal validation not works

Hi everyone,
i have 20 fields in users table.
in my admin profile module the admin can modify his infomation.
but only 12 fields he can able to modify.
so in my controller

if params[ :profileinfo ][:first_name]

    @profileinfo.update_attribute(:first_name,params[ :profileinfo
][:first_name])


end

the above simply saves what i enter into the field.why it doesnot
consider the modelvalidation.
any guess.
Thanks
-- 
Posted via http://www.ruby-forum.com/.

On Jun 22, 8:37 am, Newb Newb
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> the above simply saves what i enter into the field.why it doesnot
> consider the modelvalidation.
> any guess.
Because update_attribute ignores validations completely. The intent is
that it is useful when just changing an attribute (eg flipping a flag)
where you don''t really care about the overall validity of the object.

Fred

On Jun 22, 8:37 am, Newb Newb
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> the above simply saves what i enter into the field.why it doesnot
> consider the modelvalidation.
Please check the API docs (http://api.rubyonrails.org/) first for
things like this.

update_attribute: Updates a single attribute and saves the record
without going through the normal validation procedure.

I expect if you''re calling update_attribute 12 times you''re
doing
something wrong; either call update_attributes with a hash, or set
each attribute individually:

@profileinfo.first_name = params[:profileinfo][:first_name]
@profileinfo.last_name = params[:profileinfo][:last_name]
@profileinfo.save

Even better, look into the use of attr_protected and attr_accessible
and just use a mass assignment:

@profileinfo.update_attributes(params[:profileinfo])

-Matt

Hi..
thanks for the reply...
i have below validation in my model...
validates_exclusion_of :login,
                           :in => %w(  admin  ),
                           :message => "Name admin is not allowed"

it validates tat the admin should not be used as login name..
in my admin profile module the admin can modify his infomation.
when i save the instance of admin it gives me the above validation error 
...
is it possible to skip the exclusion of validation when i update the 
admin record....

pls suggest me..
thanks
-- 
Posted via http://www.ruby-forum.com/.

On 22 Jun 2009, at 10:14, Newb Newb wrote:
>
> Hi..
> thanks for the reply...
> i have below validation in my model...
> validates_exclusion_of :login,
>                           :in => %w(  admin  ),
>                           :message => "Name admin is not
allowed"
>
> it validates tat the admin should not be used as login name..
> in my admin profile module the admin can modify his infomation.
> when i save the instance of admin it gives me the above validation  
> error
> ...
> is it possible to skip the exclusion of validation when i update the
> admin record....
>
Just don''t use update_attribute. Use save, update_attributes etc.

Fred
> pls suggest me..
> thanks
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >