Realm.objects() return empty objects on React Native

Question

I'm testing Realm database on React Native (Testing on Android) and I've got some problems retriving data.

I used this function to persist the User.

insertData = async (data) => {
        await Realm.open({schema: [UserSchema]})
            .then( realm => {
                realm.write(()=>{
                    realm.create('User', {id: '1325487', nickname: "Jack", age: 21});
                })

                realm.close();
            })
            .catch(error => {
                console.log(error);
            });

    }

I'm trying to retrive data using this one:

findAll = () => {
        Realm.open({schema: [UserSchema]})
            .then( realm => {
                let users = realm.objects('User')
                console.log(users)

            }).catch(error => {
                console.log(error);
            })
    }

And that is what I got, an Array of empty objects:

{"0": {}, "1": {}, "10": {}, "11": {}, "12": {}, "13": {}, 
"14": {}, "15": {}, "16": {}, "17": {}, "18": {}, "19": {}, "2": 
{}, "20": {}, "21": {}, "22": {}, "23": {}, "24": {}, "25": {}, "26": {}, "27": {}, "28": {}, "29": {}, "3": {}, "30": {}, "31": {}, "32": {}, "33": {}, "34": {}, "35": {}, "36": {}, "37": {}, "38": {}, "39": {}, "4": {}, "5": {}, "6": {}, "7": {}, "8": {}, "9": {}}

This is the User Schema:

const UserSchema = {
    name: 'User',
    properties: {
        id:         'string',
        nickname:   'string',
        age:        'int'
    }
}

I think the data is being persisted, because when I save different users and use filters the quantity of results comes different. Do u have any idea why just empty objects comes? Or someway to see what I have in my Realm Database?

Answer 1

tl;dr

const virtualUsers = realm.objects('User');
const users = JSON.parse(JSON.stringify(virtualUsers));
console.log(users);

Explanation

Realm Results are a "virtual" objects

Realm Results contain virtual/Proxy objects. They contain getters and setters for the object properties, but the contains no enumerable properties itself. This is the reason you will see Symbol(_external) appear when debugging.

More

See Realm.Object

Realm does define a toJSON() function on Result objects. This can be useful for coercing the object into the actual value.

instead of:

let users = realm.objects('User')

use:

let users = JSON.parse(JSON.stringify(realm.objects('User')))

warning

This will come with a performance penalty. You should only do this if you must use objects with enumerable properties.