Swift and Parse.com : relational query

Question

On parse.com, I have a table named "ExerciseInstance" with a "pointer" to the "_User" table (with the user's objectId).

In my Swift code, I want to get all the rows from ExerciseInstance with UserAccount<_User> = "MZmMHtobwQ"

This does not work:

predicate = NSPredicate(format:"userAccount == %@", "MZmMHtobwQ")
var query = PFQuery(className:"ExerciseInstance", predicate:predicate)

Same problem with:

var query = PFQuery(className:"ExerciseInstance")
query.whereKey("userAccount", equalTo: "MZmMHtobwQ")

Any idea - what am I missing? Best, Tom

Jacob · Accepted Answer · 2014-08-21 14:15:49Z

4

You cannot check to see if it is Equal to the objectId of the user, you must create the object first:

var query = PFQuery(className:"ExerciseInstance")
query.whereKey("userAccount", equalTo: PFObject(withoutDataWithClassName:"_User", objectId:"MZmMHtobwQ"))

answered Aug 21, 2014 at 14:15

Jacob

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1 Comment

Héctor Ramos Over a year ago

Great answer! You should check out our new opening here at Parse's Platform Services Engineering team :) parse.com/jobs

Nicko Prasetio · Accepted Answer · 2016-03-12 10:38:45Z

0

Try this:

var teamQuery = PFQuery(className:"Team")
teamQuery.whereKey("winPct", greaterThan:0.5)
var userQuery = PFUser.query()
userQuery!.whereKey("hometown", matchesKey:"city", inQuery:teamQuery)
userQuery!.findObjectsInBackgroundWithBlock {
(results: [PFObject]?, error: NSError?) -> Void in
     if error == nil {
     // results will contain users with a hometown team with a winning record
   }
}

answered Mar 12, 2016 at 10:38

Nicko Prasetio

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