custom validation in activerecord

rubyonrails-talk
1

I looked all over last night trying to find the best way to create custom validations in an activerecord class. Anyone have a link or example lying around? The custom validation can't be done with a regular expression.

Chris

2

You have a few options. Here’s one way:

def validate errors.add :first_name, “can’t be admin” if self.first_name == “admin” errors.add :notes, “must not contain more than one URL” if find_spam( self.notes) end

There’s also validates_each.

See the api for this. It sure could be documented better but there are a few examples.