Dynamically creating a QueryConstraint

[bvanderw]

I would like to be able to dynamically create queries (e.g. from user input). In the ObjC code, you could use an NSPredicate, but it is not clear how it can be done in Parse-Swift. It seems the easiest way would be to use this initializer on QueryConstraint, but it is not public.

init(key: String, value: Codable? = nil, comparator: Comparator? = nil, isNull: Bool = false)

Can someone point me in the right direction?

[cbaker6]

You can use mutations and build a constant array similar to the examples in the playgrounds

Parse-Swift/ParseSwift.playground/Pages/7 - GeoPoint.xcplaygroundpage/Contents.swift

Lines 115 to 140 in 702ca34

	//: Now we will show how to query based on the `ParseGeoPoint`.
	var query: Query<GameScore> //: Store query for later user
	var constraints = [QueryConstraint]()
	do {
	let pointToFind = try ParseGeoPoint(latitude: 40.0, longitude: -30.0)
	constraints.append(near(key: "location", geoPoint: pointToFind))
	query = GameScore.query(constraints)
	query.find { results in
	switch results {
	case .success(let scores):
	assert(scores.count >= 1)
	scores.forEach { (score) in
	print("""
	Someone with objectId \"\(score.objectId!)\"
	has a points value of \"\(String(describing: score.points))\" near me
	""")
	}
	case .failure(let error):
	assertionFailure("Error querying: \(error)")
	}
	}
	}