CODEWITHSUNDEEP
swiftrealm
Pyronite
Pyronite

Reputation: 15

How to address key of retrieved object, in Realm, Swift?

I have created DB for my iOS mobile app using Realm, writing with Swift. I am trying to find way to look up for matching username and password in DB

This is what I have currently, Attempting filtering and get an object with matching username I am trying to address attribute/key called password from retrieved object

@IBAction func SignInCheck(sender: AnyObject) {

    let realm = try! Realm()
    var currentlogin = realm.objects(UserRecords).filter("name = LogUsernameTextField.text") 
//this line causes SIGABRT to be thrown

    if currentlogin.password == LogPasswordTextField.text { //This is the incorrectly addressed line
        ....
    }
}

The issue maybe that I am not understanding how objects work in the right way, nor knowing the right syntax to address what I want.

I suspect it is in form of Result but I am still unable to find way to address desired information.

Here is the table structure for your information

class UserRecords: Object {
  dynamic var username: String = ""
  dynamic var password: String = ""
  dynamic var latitude: Float = 0
  dynamic var longtitude: Float = 0
}

I am open for suggestions better solution and ways of looking up/matching passwords in the table too, if any.

Thanks in advance

Upvotes: 1

Views: 306

Answers (1)

joern
joern

Reputation: 27620

You are using a property called name in your filter string but in your UserRecords class the property is called username. Also you have to create the filter string differently:

var currentlogin = realm.objects(UserRecords).filter("username = '\(LogUsernameTextField.text!)'")

Also be aware that the filter method returns a list of UserRecord objects that match the filter and not a single object. So calling if currentlogin.password == ... will cause an error.

The list only has 1 item (because the username is unique) but it is still a list. So to access the UserRecord object you can call first:

var currentlogin = realm.objects(UserRecords).filter("name = LogUsernameTextField.text!").first

Also the text property of UITextField returns an Optional, so you have to unwrap it.

Upvotes: 1

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