19、Core Data Relationships and Searching: A Comprehensive Guide

Core Data Relationships and Searching: A Comprehensive Guide

1. Core Data Relationships Configuration

1.1 Date Column Formatting

When working with a date column, you can use an NSDateFormatter to handle the conversion between dates and strings. Follow these steps:
1. Find an NSDateFormatter in the Library and drag it precisely over the NSTextFieldCell at the top of the date column.
2. Since some dates might be from the BC - era and the default formatter doesn’t show BC or AD, click on the text field cell in the column until a small bronze icon appears below it. This icon represents the formatter attached to the column.
3. Click on the icon, then open the Attributes Inspector.
4. At the