How to have a filtering(NSPredicate) on SSection items.

[umairsuraj]

We know that "items" inside "SSSection" is a readonly property as:

/**

• Section items. You probably shouldn't mutate this directly;
• instead see SSSectionedDataSource's

• insertItem:atIndexPath:
  

• insertItems:atIndexes:inSection:
  

  */
  @Property (nonatomic, strong, readonly) NSMutableArray *items;

So how can we use predicate on items while using SSSectionDataSource.?

[jhersh]

Hi @umairsuraj, you have a few options here:

• You could look at the (old) m.cd-filter branch to see a work-in-progress implementation of data source filtering, and build on top of that
• You could make a subclass of SSSectionedDataSource that stores the current predicate, and when the predicate changes you can update the entries in your section and then reload the section or table
• You could use an SSExpandingDataSource, which is already a subclass of SSSectionedDataSource and use a combination of section expanding/collapsing along with repositioning items within sections to create a filtered section

[umairsuraj]

I have a look at "m.cd-filter" branch. Is this method works fine while using 'SSSectionedDataSource'?

• (void)setCurrentFilter:(SSResultsFilter *)newFilter.

[jhersh]

The cd in m.cd-filter refers to Core Data, and this branch was initially only for SSCoreDataSource. It is definitely an old work in progress; you'd have to port those features to the sectioned data source.

[umairsuraj]

Sure. Thanks. I will port them in sectioned data source. But including filtering methods inside will be very helpful for all of us, who are preferring your library.