Hi Fred,
I had Project has_many Tasks and i had the following before_save
callback on Task
def capitalis
if (name.blank?)
false
else
self.name = name.capitalize
end
end
Now I need to make Project and Task share a HABTM relationship. I
started experimenting with it after establishing the associations.
Created a new Project, with some tasks in it and left on task blank. I
got an ActiveRecord::RecordNotSaved error for the blank Task.
Now I understand it is because of the false return in the callback.
And this also cancels all following callbacks and association
callbacks (?). So although the valid Tasks and the Project itself DO
get saved to the DB, I get this error.
Is it neat enough to rescue from this specific error in the controller
and ignore it? Seems slightly hacky.. so, is there a nicer way to
handle this?
Thanks..
On Mar 17, 2:43 pm, Ram <[email protected]> wrote:
> @Wolas!,
>
> I figured a validation will do the trick but knew something simpler
> had to be there.
>
> @Fred,
>
> Dint count on it being SO simple!! :D <bangin head on wall>
>
> Thanks guys. returning "false" did the trick.
>
> On Mar 17, 2:22 pm, Frederick Cheung <[email protected]>
> wrote:
>
> > On Mar 17, 5:58 am, Ram <[email protected]> wrote:
>
> > > Hi all,
>
> > > I have a multi model form (Project with many tasks) and I want to
> > > prevent a task from being saved to the DB if it is empty ie. if there
> > > is no i/p for that task from the user. I tried the following
>
> > If you don't want the save to happen then you should return false from
> > your before_save.
>
> > Fred
>
> > > class Task < ActiveRecord::Base
>
> > > before_save :check_if_empty
> > > ...
>
> > > def check_if_empty
> > > self.destroy if description.blank?
> > > end
>
> > > but i get this
>
> > > TypeError in ProjectsController#create
> > > can't modify frozen hash
>
> > > Is there a way to let ActiveRecord know not to save a record (which is
> > > a frozen hash in this case) to the DB?
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