I *think* I have answered my own question. It looks like this may be
a new feature in Rails3. The Rails documentation has been upgraded to
version 3 which I hadn't noticed when I found the :restrict option.
Having the documentation updated to version 3 is definitely going to
be a hassle for those of us still on version 2.3.x.
Thanks, Ken
On Sep 7, 2010, at 10:01 AM, Ken Hudson wrote:
Hi All,
According to the Rails documentation, has_many associations have
a :dependent option that can be set to :restrict. "If set
to :restrict this object cannot be deleted if it has any associated
object". This is what I wanted so I have the following code in my
gallery model:
has_many :images, :dependent => :restrict
However, I am getting the following error:
"ArgumentError: The :dependent option expects
either :destroy, :delete_all, or :nullify (:restrict)"
Any idea what my problem is? I'm not sure why :restrict is shown in
parentheses in the error message. The documentation clearly shows
it as a valid option for :dependent...
Thanks, Ken
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