Ruby on Rails

Eric Saupe wrote in post #1154001:
> First change the validates to only validate if a
> password is being passed.
>
> validates :password, length: { minimum: 6 }, :if => :password
>
>
> Second, remove the parameters for password if the are blank on your
> update
> method.
>
> if params[:password].blank?
> params.delete(:password)
> end
>

The latter I only did, because in this case it would obviously not work,
but I was not aware of the trick for the validates function!

I think I'll have to do this for all 'validates' in my application,
because I often have the case that I will update only some of the
attributes. I wonder *why* validates looks at attributes which are not
part of the update. Is there a use case where this makes sense?

Ronald

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