How to access instance variable inside lazy variable declaration swift

Question

I am new to Swift and was trying to understand lazy variable. I have working experience on Objective-C but swift is driving me crazy.

I have core data model. Where Person ----holds----> Account and Account ----belongsTo--> Person. holds and belongsTo are the relationship.

Person list will be displayed and on tapping person all the account associated with him should be listed in TableView. I am using NSFetchedResultsController because account might get added on the fly and I want to reflect the changes immediately using NSFetchedResultsController delegate.

Now I have passed tapped person object to my class.

class DetailViewController : ViewController{
    var foundPerson : Person?

    lazy var accountFetchedResultsController : NSFetchedResultsController = {

        let fetchRequest = NSFetchRequest(entityName: "AccountInfo")
        fetchRequest.predicate = NSPredicate(format: "belongsTo = %@", foundPerson!)
        fetchRequest.sortDescriptors = [NSSortDescriptor(key: "accountnumber", ascending: true)]
        let appdelegate = UIApplication.sharedApplication().delegate as? AppDelegate
        var fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: appdelegate!.managedObjectContext, sectionNameKeyPath: nil, cacheName: nil)
        return fetchedResultsController
    }()

    //other view controller methods
}

When I try to compile this it gives error saying that

"Instance member foundPerson can not be used on type DetailViewController"

I could not understand much from that error. What exactly is it trying to convey ?? Whats the mistake ?? Thanks in advance

Aziz · Accepted Answer · 2016-08-15 20:13:19Z

4

Try adding self before foundPerson

        fetchRequest.predicate = NSPredicate(format: "belongsTo = %@", self.foundPerson!)

answered Aug 15, 2016 at 20:13

Aziz

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1 Comment

Sandeep Bhandari Over a year ago

Bingo buddy :) Got the answer :) I was about to delete my question and saw ur answer :) Thank you :) I'll accept ur answer in 8 min (Cant accept the answer as I have up voted it just now)

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