I guess I forgot to mention this is rails3 and the edge rdoc threw me
off.
In Rails 2.1+ there is ActiveRecord::dirty class, which looked like
what I wanted. But in Rails 3 there is no ActiveRecord::dirty class.
There is ActiveModel::dirty - and that is what I was referring to that
I was not sure I understood.
After further digging, ActiveModel::dirty:
"Provides a way to track changes in your object in the same way as
Active Record does."
I am not sure what includes what, but there is
ActiveRecord::AttributeMethods::Dirty, but I can't seem to find the
examples that were in the 2.x rdoc (e.g., person.name_changed?).
After some experimenting I found that the methods changed, changed?
etc are there and work. I just can't find the documentation.
Thank for the help.
On Aug 16, 12:35 pm, Marnen Laibow-Koser <[email protected]> wrote:
> AppleII717 wrote:
> > I have nested models:
>
> > Assessments has_many Questions has_many Answers.
>
> > I have plans on turning this into an engine where it can be used by
> > other models.
>
> > There are several fields in both Questions and Answers that, if
> > changed (or created ,deleted) I need to call a "update_procedure" that
> > does some calculations and saves the results in the Assessment.
>
> > Right now I have an after_save and after_destroy filter that calls the
> > routine if anything is changed, which is not what I want. What
> > approach do I need to handle filters if only certain attributes are
> > change?. The reason is that I may need to change the state/status of
> > the assessment if scores in another model were based on the current
> > version. I don't need to do the state change if the admin just fixed a
> > misspelling.
>
> > I looked at Module: ActiveRecord::Dirty, but not sure I understand it.
> > Is that what I need to understand?
>
> A quick look at the rdoc would suggest that Dirty#changed would do what
> you want. An observer might be useful too.
>
> Best,
> --
> Marnen Laibow-Koserhttp://www.marnen.org
> [email protected]
> --
> Posted viahttp://www.ruby-forum.com/.
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