Question

When an object returns false for .valid? , is there a way to find out why?

CardSignup.new(params[:card_signup]).valid?
=> false

Sounds great Rails..but why?

Sort of related, but here’s an example. I’m doing this :

@card_signup.update_attributes("email"=>"[e-mail]")
=> false

But if I do this :

@card_signup.update_attribute("email", "[e-mail]")
=> true

Why would that work when I update the single attribute as opposed to update_attributes?

Answer 1

You should check the @card_signup.errors collection.

For your second question, the update_attribute method saves the record without validation procedure. On the opposite, update_attributes perform validations.