How can I conditional the validation on a model validation?

Rails
1

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?

2

On 13 March 2010 18:20, Jorge alejandro Mendoza torres
[email protected] wrote:

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

3

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
<[email protected]

wrote:

Fields: id, name, address, telephone, mail

.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

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