CODEWITHSUNDEEP
ioscore-dataswift3
eternaty
eternaty

Reputation: 127

How I search a string in core data with swift 3?

I want to search a string in my DB and it keeps returning all records from core data. The other questions I saw here didn't work. Suggestions? 

var users:[Users] = []

    override func viewDidLoad() {
        super.viewDidLoad()

        let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext

        let myrequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Users")

        let predicate = NSPredicate(format: "name = '%@'", "alex")
        myrequest.predicate = predicate

        do{
            users = try context.fetch(myrequest) as! [Users]

        }catch{
            print("error")
        }


    }

Upvotes: 1

Views: 3026

Answers (3)

eternaty
eternaty

Reputation: 127

it's working now. this is the final code. Maybe it will help someone in the future :) thanks for the help guys.

let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext

        let query:NSFetchRequest<Users> = Users.fetchRequest()
        let key = "alex"

        let predicate = NSPredicate(format: "name contains[c] %@", key)
        query.predicate = predicate

        do{
            users = try context.fetch(query)
            print(users.count)

        }catch{
            print("error")
        }

Upvotes: 4

Bikesh Thakur
Bikesh Thakur

Reputation: 1024

try to do this in do case 

users = try context.fetch(Users.fetchRequest())

Upvotes: 0

user3151675
user3151675

Reputation: 58019

You should not use single quotes in your predicate. Try with this:

let predicate = NSPredicate(format: "name = %@", "alex")
myrequest.predicate = predicate

Upvotes: 0

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