Retrieving parse.com data in Swift

Question

I've been able to save successfully to Parse via Swift, but am having trouble retrieving data (and all of the tutorials on retrieving seem to be for Obj-C).

Here's my code (with Id's redacted).

Parse.setApplicationId("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", clientKey: "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")


    var query = PFQuery(className: "EventObject")
    query.getObjectInBackgroundWithId(objectId: String!) {
        (event: PFObject!, error: NSError!) -> Void in

        if error == nil {
            println(event)

        } else {

        println(error)

        }

    }

I have 4 records in this class right now, but if I want to pull the data for all of them, how do I get the Object using the ID if I'm not sure what the IDs are? I'm assuming I can access them sequentially as an array, but I'm not quite clear how to do that, and am confused, as the only command I know to retrieve appears to require knowing the ID.

Thanks for any help!

Antonio · Accepted Answer · 2014-11-24 18:36:20Z

4

The official parse documentation explains how to make queries - there is sample code in swift.

In your case you have to use findObjectsInBackgroundWithBlock:

var query = PFQuery(className:"EventObject")
query.findObjectsInBackgroundWithBlock { (objects: [AnyObject]!, error: NSError!) -> Void in
  if error == nil {
    for object in objects {
        // Do something
    }
  } else {
      println(error)
  }
}

which, if successful, provides to the closure an array of objects matching the query - since there's no filter set in the query, it just returns all records.

answered Nov 24, 2014 at 18:36

Antonio

72.8k11 gold badges152 silver badges170 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Nurdin Over a year ago

I got this error message, /Users/MNurdin/Documents/iOS/xxxxx/Controllers/Profile/TableViewController.swift:40:15: Cannot invoke 'findObjectsInBackgroundWithBlock' with an argument list of type '(([AnyObject]!, NSError!) -> Void)'

n.... Over a year ago

But how we can retrieve all objects. I mean all rows from the table?

bpolat · Accepted Answer · 2016-01-21 15:31:29Z

1

Swift 2.1 Update

func fetchFromParse() {
    let query = PFQuery(className:"Your_Class_Name")
    query.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
        if error == nil {
            for object in objects! {
                // Do something
            }
        } else {
            print(error)
        }
    }


}

answered Jan 21, 2016 at 15:31

bpolat

3,90822 silver badges26 bronze badges

Comments

Capella · Accepted Answer · 2017-01-19 08:42:11Z

0

Here is the code for fetch objects in Swift3.0.

let query = PFQuery(className: "Your_Class_Name")
    query.findObjectsInBackground { (objects, error) in
        if error == nil {

        }
        else {

        }
    }

answered Jan 19, 2017 at 8:42

Capella

1,0314 gold badges21 silver badges34 bronze badges

Comments

Vishal Vaghasiya · Accepted Answer · 2017-11-30 05:38:04Z

0

Retrive Data from parse: swift 3

 let adventureObject = PFQuery(className: "ClassName")
    adventureObject.addAscendingOrder("objectId")
    var objectID: String = String()
    adventureObject.findObjectsInBackground(block: { (Success, error) in
    })

edited Nov 30, 2017 at 5:38

answered Apr 20, 2017 at 12:54

Vishal Vaghasiya

5,0193 gold badges32 silver badges43 bronze badges

1 Comment

mickmackusa Over a year ago

Please edit your answer to include some explanation. Code-only answers do very little to educate future SO readers. Your answer is in the moderation queue for being low-quality.

Collectives™ on Stack Overflow

Retrieving parse.com data in Swift

4 Answers 4

2 Comments

Comments

Comments

Retrive Data from parse: swift 3

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

Comments

Comments

Retrive Data from parse: swift 3

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related