Hi Everyone,
I've encountered an interesting problem today; I'm setting up an application with locations, where each location has_many :events. The event model has a datetime field, called "service_at."
I'm working with Timezones, so I've rewritten my accessor methods for service_at to automatically convert the service_at from UTC to Local or the reverse. The timezone data is stored on the location in this example.
The problem I'm encountering is that I can't reference the parent during a build() operation.
So the following code: location = Location.find(1) event = location.events.build(params[:event])
Creates a situation where the custom service_at= method can't access the location data.
def service_at=(time) logger.info("converting #{time} to UTC") logger.info(self.to_yaml) time = location.tz.local_to_utc(time) unless location.nil? logger.info("#{time} to be saved.") write_attribute(:service_at, time) end
Pardon my debugging code, but the output in the console looks like this (assuming that the service_at I'm passing is the datetime December 14, 2006, 10:00am)
converting Thu Dec 14 10:00:00 UTC 2006 to UTC --- !ruby/object:Event attributes: project_id: 1 location_id: service_at: workers_needed: 1 total_hours: 8 new_record: true
Thu Dec 14 10:00:00 UTC 2006 to be saved.
As you'll notice, the event instance doesn't have a record of the location_id or Location object at all.
I can't simply use a before_save callback, because creating an event using Event.new and passing in location_id as a parameter will cause the above code to function the way I expect.
So, any suggestions on why the events.build() method isn't making the location object available to it's newly created association?
-Jared
