解析查询总是返回空结果

Question

Hello I was trying to uses Parse.com's Cloud Code API and I was trying to create a code snippet that will query the data that shows in my data browser

My cloud code is

Parse.Cloud.define("getDriver", function (request, response){
    var User = Parse.Object.extend("User");
    var query = new Parse.Query(User);
    var lastlogin;

    //response.success({"obj":request.params.objectId}); //works

    query.equalTo("objectId",request.params.objectId);
    query.find({
        success: function(objs) {

            response.success({"driver_id":objs.length});

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

I am calling the cloud code with php curl , the code is

$ch =curl_init("https://api.parse.com/1/functions/getDriver/");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,true);
curl_setopt($ch,CURLOPT_CAINFO,"ca-bundle.crt");

curl_setopt($ch,CURLOPT_HTTPHEADER,array('X-Parse-Application-Id:   APPLICATION_ID','X-Parse-REST-API-Key: API_KEY', 'Content-Type: application/json'));

curl_setopt($ch,CURLOPT_POSTFIELDS, "{\"objectId\": \"NDpoVvFcGP\"}");
  //execute post
$result = curl_exec($ch);

//close connection
curl_close($ch);

My problem is that the query always gives an empty result even though the correct objectId is being passed: NDpoVvFcGP

I cannot figure out this one. What might be the problem? Can someone please help?

Thanks

Answer 1

If you are querying the built-in User class, you should look at the documentation.

Specifically you should create your User query as follows:

var query = new Parse.Query(Parse.User);

Internally I think they use "_User" as the class name, which is why your query failed when using "User". Best to just use the documented and supported method of querying the User class.