Fix select exclude queries

spec/ParseQuery.spec.js

@@ -3140,7 +3140,7 @@ describe('Parse.Query testing', () => {
   });
 
   it('select keys query', function (done) {
-    const obj = new TestObject({ foo: 'baz', bar: 1 });
+    const obj = new TestObject({ foo: 'baz', bar: 1, qux: 2 });
 
     obj
       .save()
@@ -3157,23 +3157,28 @@ describe('Parse.Query testing', () => {
         ok(!result.dirty(), 'expected result not to be dirty');
         strictEqual(result.get('foo'), 'baz');
         strictEqual(result.get('bar'), undefined, "expected 'bar' field to be unset");
+        strictEqual(result.get('qux'), undefined, "expected 'qux' field to be unset");
         return result.fetch();
       })
       .then(function (result) {
         strictEqual(result.get('foo'), 'baz');
         strictEqual(result.get('bar'), 1);
+        strictEqual(result.get('qux'), 2);
       })
       .then(function () {
         obj._clearServerData();
         const query = new Parse.Query(TestObject);
-        query.select([]);
+        query.select(['foo']);
         return query.first();
       })
       .then(function (result) {
         ok(result.id, 'expected object id to be set');
+        ok(result.createdAt, 'expected object createdAt to be set');
+        ok(result.updatedAt, 'expected object updatedAt to be set');
         ok(!result.dirty(), 'expected result not to be dirty');
-        strictEqual(result.get('foo'), undefined, "expected 'foo' field to be unset");
+        strictEqual(result.get('foo'), 'baz');
         strictEqual(result.get('bar'), undefined, "expected 'bar' field to be unset");
+        strictEqual(result.get('qux'), undefined, "expected 'qux' field to be unset");
       })
       .then(function () {
         obj._clearServerData();
@@ -3186,6 +3191,7 @@ describe('Parse.Query testing', () => {
         ok(!result.dirty(), 'expected result not to be dirty');
         strictEqual(result.get('foo'), 'baz');
         strictEqual(result.get('bar'), 1);
+        strictEqual(result.get('qux'), undefined, "expected 'qux' field to be unset");
       })
       .then(function () {
         obj._clearServerData();
@@ -3198,6 +3204,7 @@ describe('Parse.Query testing', () => {
         ok(!result.dirty(), 'expected result not to be dirty');
         strictEqual(result.get('foo'), 'baz');
         strictEqual(result.get('bar'), 1);
+        strictEqual(result.get('qux'), undefined, "expected 'qux' field to be unset");
       })
       .then(
         function () {
@@ -3224,6 +3231,17 @@ describe('Parse.Query testing', () => {
     });
     expect(response.data.results[0].foo).toBeUndefined();
     expect(response.data.results[0].hello).toBe('world');
+
+    const response2 = await request({
+      url: Parse.serverURL + '/classes/TestObject',
+      qs: {
+        excludeKeys: ['foo', 'hello'],
+        where: JSON.stringify({ objectId: obj.id }),
+      },
+      headers: masterKeyHeaders,
+    });
+    expect(response2.data.results[0].foo).toBeUndefined();
+    expect(response2.data.results[0].hello).toBeUndefined();
   });
 
   it('exclude keys with select same key', async () => {

src/Routers/ClassesRouter.js

@@ -57,14 +57,14 @@ export class ClassesRouter extends PromiseRouter {
       }
     }
 
-    if (typeof body.keys === 'string') {
-      options.keys = body.keys;
+    if (body.keys) {
+      options.keys = String(body.keys);
     }
     if (body.include) {
       options.include = String(body.include);
     }
-    if (typeof body.excludeKeys == 'string') {
-      options.excludeKeys = body.excludeKeys;
+    if (body.excludeKeys) {
+      options.excludeKeys = String(body.excludeKeys);
     }
     if (typeof body.readPreference === 'string') {
       options.readPreference = body.readPreference;
@@ -187,11 +187,11 @@ export class ClassesRouter extends PromiseRouter {
     if (body.count) {
       options.count = true;
     }
-    if (typeof body.keys == 'string') {
-      options.keys = body.keys;
+    if (body.keys) {
+      options.keys = String(body.keys);
     }
-    if (typeof body.excludeKeys == 'string') {
-      options.excludeKeys = body.excludeKeys;
+    if (body.excludeKeys) {
+      options.excludeKeys = String(body.excludeKeys);
     }
     if (body.include) {
       options.include = String(body.include);