CODEWITHSUNDEEP
iosswiftnsarraynspredicate
Gajjar Tejas
Gajjar Tejas

Reputation: 188

Searching string in NSArray of custom object using NSPredicate

I have two classes like below:

class City : NSObject{
    var header:String? = nil
    var areas:NSMutableArray? = nil  //Contain array of Area

    //Return array of City objects
    class func generate(cityCount:NSInteger) -> NSMutableArray{...} 
}

and

class Area : NSObject{
    var title:String? = nil
    var address:String? = nil
}
    //Return array of Area objects
    class func generate(areaCount:NSInteger) -> NSMutableArray {...}

Now, I have Array of City like this declared in my viewcontroller:

var cities = City.generate(200)

and when I search the header inside using NSPredicate it work perfectly 

let pred = NSPredicate(format: "SELF.header CONTAINS %@",searchString)
let filteredCities = self.cities.filteredArrayUsingPredicate(pred)

But when I search the cities->areas->address (I want to search address). It is not working. It is always return 0 object. Here what I am trying:

let pred = NSPredicate(format: "SELF.areas.address CONTAINS %@",searchString) //name
let filteredCities = (self.cities as NSArray).filteredArrayUsingPredicate(pred)

EDIT

I need only the area object that contain matching address. I have tried:

let pred = NSPredicate(format: "ANY areas.address CONTAINS %@",searchString)

This is giving the City object with all area object.

enter image description here

Thanks in advance.

Upvotes: 0

Views: 965

Answers (2)

Katta Ravinder
Katta Ravinder

Reputation: 26

Try this bro,

let pred = NSPredicate(format: "SELF contains[c] %@",searchString) let filteredCities = self.area.filteredArrayUsingPredicate(pred)

Upvotes: 0

Nirav D
Nirav D

Reputation: 72410

Have try like this

let pred = NSPredicate(format: "ANY areas.address CONTAINS %@",searchString)

Upvotes: 1

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