CPFQueryCollectionViewController is a plug-in view controller than can be used like
PFQueryTableViewController but for collection views (PFQueryCollectionViewController
if you prefer).
It's enough to include CPFQueryCollectionViewController.h / .m in your project and
import them to start using it. Simply change your collection views to inherit from
CPFQueryCollectionViewController instead of the plain UICollectionViewController
Using the controller is very similar to Parse.coms table view controller.
https://parse.com/docs/ios/api/Classes/PFQueryTableViewController.html
You must overload queryForCollection to return a PFQuery that returns the objects you want
to display.
You must overload collectionView:cellForItemAtIndexPath:object: to provide a your collection
view cells.
You may overload objectsWillLoad, objectsDidLoad to hook into the pre and post loading of
the view. If you do, you must call [super objects*Load] to get the proper behavior from the
loading indicator et. al.
You can also override the usual numberOfSectionsInCollectionView:, collectionView:numberOfItemsInSection:
to tweak the order in which the items appear in the collection. Remember to also override objectAtIndexPath:
in this case.
The initDefaults method allows you to disable pullToRefresh, enable pagination and to set the number of objects per page for when pagination is enabled.
Using the view controller with template cells (ie. supplying className etc.
to the controller and let it handle the construction of the cells) is not yet supported. Constructing these
through Storyboards is so simple I did not feel it to be necessary.