class Activity has_many :locations
In activities#new, I navigate away and select a location (among other things) on a map. At this point, the @activity is still missing attributes and is invalid. What is the best practice for preserving the state of this invalid record until I return to it? I could:
1. Make all validations conditional depending on the state of the record. But this seems pretty clunky. I want to be able to call #valid? and get the correct answer.
2. Create a supper class RawActivity with no validations and then let Activity inherit from it when it's ready to be saved. This also looks like a messy solution.
3. Dump all the @activity attributes into the session, reconstitute them in the Location controller. Find the location, dump the @location attributes into session. Go back to the Activity controller and stitch it all together. Yuck.
4. Render the form in javascript and hide everything until it's ready to be saved.
Am I missing something? What's the best practice?