Parse.com JS looping through an array when using query.find()

Question

I'm trying to query using each elements on the array as the constraint, but so far its has only given me one result.

Here is the array:

["C44","C43","C45","C117"]

Here what I have:

{var TestObject = Parse.Object.extend("TestObject");
    var query = new Parse.Query(TestObject);
    query.get("W7yuUsbbav", {
        success: function(testObject) {
            var subjectArray = testObject.get("subjects");


            for (i = 0; i < subjectArray.length ; i++ ){

                console.log(subjectArray[i]);
                var query = new Parse.Query("Subjects");
                query.equalTo("subCode", subjectArray[i]);
                query.find({
                    success: function(results) {
                        $scope.$apply(function() {
                            $scope.subjects1 = results.map(function(obj) {
                                return {subCode: obj.get("subCode"), subName: obj.get("subName"),  subDesc: obj.get("subDesc")};
                            });
                        });
                    },
                    error: function(error) {
                    }
                });
            }

        },
        error: function(object, error) {
            // The object was not retrieved successfully.
            // error is a Parse.Error with an error code and message.
        }
    });}

BuffMcBigHuge · Accepted Answer · 2016-01-13 21:45:00Z

1

You can use the containedIn property of query.

var sampleId = "W7yuUsbbav";
var query1 = new Parse.Query("TestObject");
query1.get(sampleId).then(function (testObject) {

    // Success
    var subjectArray = testObject.get("subjects");

    var query2 = new Parse.Query("Subjects");
    query2.containedIn("subCode", subjectArray);

    return query2.find();

}).then(function (subjectObjects) {

    // Success
    // results is an array of objects

}, function (error) {

    // Error

});

answered Jan 13, 2016 at 21:45

BuffMcBigHuge

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3 Comments

mspcd Over a year ago

Thanks, that got it working. This is the parse promises right? I was just reading up it but its was taking a while to figure it out.

BuffMcBigHuge Over a year ago

Yes, promise notation is far more useful in creating chained queries. Please up-vote my post if I solved your issue!

mspcd Over a year ago

As much as I want to I can't, says I need 15 rep before I can do stuff. I will when I'm able to.

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