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Sunday, March 14, 2010


Re: [Rails] How can I conditional the validation on a model validation?

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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.



On 13 March 2010 19:20, Jorge alejandro Mendoza torres <lists@ruby-forum.com> 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?
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