Question

I am almost done researching for my application. The last thing that I need to be able to learn how to do is the following situation: Let’s say I have created a UItableview drilldown app, but once the user gets to the end of that drill down (their choices on a specific dog product for instance are now very specific), they can save that information. What I want my app to do here is, at the end of the drilldown, save their entire nsindexpath as another entity so that I can send this information later up to my MySQL database. My question is, how could I re-save an nsstring from an nsindexpath in another entity?

Answer 1

I agree with runmads suggestions. CoreData will probably make your life easier in the long run. To answer your question though:

Don’t save the table view’s NSIndexPath. The selection index path is a view related property (in MVC terms). Your users choice belongs to the model domain. It’s bad practice to mix the two and if you later insert new choices in one of your tables, your stored index paths will become invalid.

Instead create something like a UserChoice object or a dictionary or an array which you can pass down your tableview controllers as the user drills down. When the user selects a cell, add the primary key of the associated data object to your array. At the end, store the primary keys you’ve collected along the way into your database.