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Tirta K. Untario

2007-May-23 14:22 UTC

Force lowercase username in a model

Hi guys,

I ran into small problem here, but couldn''t find the solution
anywhere.

I have this model:

    create_table :users do |t|
      t.column "username",      :string
      t.column "email",         :string
      t.column "password", :string
    end

I want to force User.username to be in lowercase in every save/update.
So, if I fill ''MeMbeR'', no error raised, but it''s
saved as ''member'' in
the table. I tried this way:

def username
  @username
end

def username=(user)
  @username = user.downcase
end

But it results in username being NULL in the table.

Any advice would be very helpful. Thanks.


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Robert Walker

2007-May-23 14:31 UTC

head link

Re: Force lowercase username in a model

> def username
>   @username
> end
>
> def username=(user)
>   @username = user.downcase
> end
def username=(user)
  self.username = user.downcase
end

or possibly this:

def before_save
  username = username.downcase
end

On May 23, 10:22 am, "Tirta K. Untario"
<tkunta...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hi guys,
>
> I ran into small problem here, but couldn''t find the solution
> anywhere.
>
> I have this model:
>
>     create_table :users do |t|
>       t.column "username",      :string
>       t.column "email",         :string
>       t.column "password", :string
>     end
>
> I want to force User.username to be in lowercase in every save/update.
> So, if I fill ''MeMbeR'', no error raised, but
it''s saved as ''member'' in
> the table. I tried this way:
>
> def username
>   @username
> end
>
> def username=(user)
>   @username = user.downcase
> end
>
> But it results in username being NULL in the table.
>
> Any advice would be very helpful. Thanks.

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Robert Walker

2007-May-23 14:32 UTC

head link

Re: Force lowercase username in a model

> def username
>   @username
> end
>
> def username=(user)
>   @username = user.downcase
> end
def username=(user)
  self.username = user.downcase
end

or possibly this:

def before_save
  username = username.downcase
end

On May 23, 10:22 am, "Tirta K. Untario"
<tkunta...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hi guys,
>
> I ran into small problem here, but couldn''t find the solution
> anywhere.
>
> I have this model:
>
>     create_table :users do |t|
>       t.column "username",      :string
>       t.column "email",         :string
>       t.column "password", :string
>     end
>
> I want to force User.username to be in lowercase in every save/update.
> So, if I fill ''MeMbeR'', no error raised, but
it''s saved as ''member'' in
> the table. I tried this way:
>
> def username
>   @username
> end
>
> def username=(user)
>   @username = user.downcase
> end
>
> But it results in username being NULL in the table.
>
> Any advice would be very helpful. Thanks.

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Isak Hansen

2007-May-23 14:37 UTC

head link

Re: Force lowercase username in a model

On 5/23/07, Tirta K. Untario
<tkuntario-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> Hi guys,
>
> I ran into small problem here, but couldn''t find the solution
> anywhere.
>
> I have this model:
>
>     create_table :users do |t|
>       t.column "username",      :string
>       t.column "email",         :string
>       t.column "password", :string
>     end
>
> I want to force User.username to be in lowercase in every save/update.
> So, if I fill ''MeMbeR'', no error raised, but
it''s saved as ''member'' in
> the table. I tried this way:
>
> def username
>   @username
> end
>
> def username=(user)
>   @username = user.downcase
> end
>
> But it results in username being NULL in the table.
>
> Any advice would be very helpful. Thanks.
>
AR model attributes aren''t simply instance variables. The api docs for
ActiveRecord::Base explain how you go about overriding the default
accessors.


Isak


>
> >
>
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Tirta K. Untario

2007-May-23 14:44 UTC

head link

Re: Force lowercase username in a model

This method works:

  def before_save
    self.username = self.username.downcase
  end

Thanks, Robert! :)

On May 23, 9:32 pm, Robert Walker
<rwalker...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> > def username
> >   @username
> > end
>
> > def username=(user)
> >   @username = user.downcase
> > end
>
> def username=(user)
>   self.username = user.downcase
> end
>
> or possibly this:
>
> def before_save
>   username = username.downcase
> end

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Tirta K. Untario

2007-May-23 14:45 UTC

head link

Re: Force lowercase username in a model

This method works:

  def before_save
    self.username = self.username.downcase
  end

Thanks, Robert! :)

On May 23, 9:32 pm, Robert Walker
<rwalker...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> > def username
> >   @username
> > end
>
> > def username=(user)
> >   @username = user.downcase
> > end
>
> def username=(user)
>   self.username = user.downcase
> end
>
> or possibly this:
>
> def before_save
>   username = username.downcase
> end

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dblack-TKXtfPMJ4Ozk1uMJSBkQmQ@public.gmane.org

2007-May-23 14:48 UTC

head link

Re: Force lowercase username in a model

Hi --

On Wed, 23 May 2007, Robert Walker wrote:
> On May 23, 10:22 am, "Tirta K. Untario"
<tkunta...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> Hi guys,
>>
>> I ran into small problem here, but couldn''t find the solution
>> anywhere.
>>
>> I have this model:
>>
>>     create_table :users do |t|
>>       t.column "username",      :string
>>       t.column "email",         :string
>>       t.column "password", :string
>>     end
>>
>> I want to force User.username to be in lowercase in every save/update.
>> So, if I fill ''MeMbeR'', no error raised, but
it''s saved as ''member'' in
>> the table. I tried this way:
>>
>> def username
>>   @username
>> end
>>
>> def username=(user)
>>   @username = user.downcase
>> end
>>
>> But it results in username being NULL in the table.
>>
>> Any advice would be very helpful. Thanks.
>
>
> --~--~---------~--~----~------------~-------~--~----~
>
>> def username
>>   @username
>> end
>>
>> def username=(user)
>>   @username = user.downcase
>> end
>
> def username=(user)
>  self.username = user.downcase
> end
That will recurse infinitely (or until you run out of stack space),
because self.username = is a call to the very method you''re defining.
> or possibly this:
>
> def before_save
>  username = username.downcase
> end
You''re just assigning to a local variable (username) there.

Try this:

   def before_save
     self.username = self.username.downcase
   end

(You can actually dispense with the second ''self'' if you
wish.)


David

-- 
Q. What is THE Ruby book for Rails developers?
A. RUBY FOR RAILS by David A. Black (http://www.manning.com/black)
    (See what readers are saying!  http://www.rubypal.com/r4rrevs.pdf)
Q. Where can I get Ruby/Rails on-site training, consulting, coaching?
A. Ruby Power and Light, LLC (http://www.rubypal.com)

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Rick Olson

2007-May-23 14:49 UTC

head link

Re: Force lowercase username in a model

> def username=(user)
>   self.username = user.downcase
> end
This would cause an infinite loop.  If you wanted to use a custom
setter you should go with:

def username=(user)
  write_attribute :username, user
end

-- 
Rick Olson
http://lighthouseapp.com
http://weblog.techno-weenie.net
http://mephistoblog.com

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Robert Walker

2007-May-23 15:03 UTC

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Re: Force lowercase username in a model

> This would cause an infinite loop.  If you wanted to use a custom
> setter you should go with:
hehe, oops yes that true.  too quick on the draw there and didn''t
think it through.

On May 23, 10:49 am, "Rick Olson"
<technowee...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> > def username=(user)
> >   self.username = user.downcase
> > end
>
> This would cause an infinite loop.  If you wanted to use a custom
> setter you should go with:
>
> def username=(user)
>   write_attribute :username, user
> end
>
> --
> Rick
Olsonhttp://lighthouseapp.comhttp://weblog.techno-weenie.nethttp://mephistoblog.com

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David B.

2009-Aug-30 18:38 UTC

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Re: Force lowercase username in a model

Isak Hansen wrote:> On 5/23/07, Tirta K. Untario
<tkuntario-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>       t.column "email",         :string
>>
>> def username=(user)
>>   @username = user.downcase
>> end
>>
>> But it results in username being NULL in the table.
>>
>> Any advice would be very helpful. Thanks.
>>
> 
> AR model attributes aren''t simply instance variables. The api docs
for
> ActiveRecord::Base explain how you go about overriding the default
> accessors.
> 
> 
> Isak
For bypassing the infinite loop, you could use this too:

  def before_save
    self.username.downcase!
  end

D.
-- 
Posted via http://www.ruby-forum.com/.

Rails - May 2007 - Force lowercase username in a model

Force lowercase username in a model

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Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model

Re: Force lowercase username in a model