Rails - Mar 2010 - How can I conditional the validation on a model validation?

I''m making an application in Ruby, but I create records from text
files,
which contain basic information to create a record. Then I modify the
records from the website, but now validating all fields.
What I do is validate some fields when the record is created from the
text file, and then validate the other fields which are filled from the
website.
Here''s an example:

# My Table
Table name: Person
Fields: id, name, address, telephone, mail

The text file only contains the id and name. From the website, add the
other fields, but I also want to validate.

So I have the model:

class Person <ActiveRecord:: Base
  validates_presence_of: id
  validates_presence_of name
end

How can I make previous validation from the model?
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On 13 March 2010 18:20, Jorge alejandro Mendoza torres
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> I''m making an application in Ruby, but I create records from text
files,
> which contain basic information to create a record. Then I modify the
> records from the website, but now validating all fields.
> What I do is validate some fields when the record is created from the
> text file, and then validate the other fields which are filled from the
> website.
> Here''s an example:
>
> # My Table
> Table name: Person
> Fields: id, name, address, telephone, mail
>
> The text file only contains the id and name. From the website, add the
> other fields, but I also want to validate.
>
> So I have the model:
>
> class Person <ActiveRecord:: Base
>  validates_presence_of: id
>  validates_presence_of name
Is this what you want?
validates_presence_of :somethingelse, :on => :update

See the docs for validations at
http://api.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html

Colin

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If you''re asking "how do I avoid the validation check on name and
id when
updating", then you should look at :on => params for validation.

validates_presence_of :id, :name, :on => :create

I think everything is clearly explained in the docs.

http://api.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html
<http://api.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html>

On 13 March 2010 19:20, Jorge alejandro Mendoza torres
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org
> wrote:
> I''m making an application in Ruby, but I create records from text
files,
> which contain basic information to create a record. Then I modify the
> records from the website, but now validating all fields.
> What I do is validate some fields when the record is created from the
> text file, and then validate the other fields which are filled from the
> website.
> Here''s an example:
>
> # My Table
> Table name: Person
> Fields: id, name, address, telephone, mail
>
> The text file only contains the id and name. From the website, add the
> other fields, but I also want to validate.
>
> So I have the model:
>
> class Person <ActiveRecord:: Base
>  validates_presence_of: id
>  validates_presence_of name
> end
>
> How can I make previous validation from the model?
> --
> Posted via http://www.ruby-forum.com/.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Ruby on Rails: Talk" group.
> To post to this group, send email to
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> To unsubscribe from this group, send email to
>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>

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