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Mohammad Hunan ChughtaiMohammad Hunan Chughtai
Mohammad Hunan Chughtai
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Mohammad Hunan Chughtai
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(DOCSP-26985): @realm/reactify: UUID - React Native SDK (#2443)
## Pull Request Info ### Jira - https://jira.mongodb.org/browse/DOCSP-26985 ### Staged Changes - [UUID - React Native SDK](https://docs-mongodbcom-staging.corp.mongodb.com/realm/docsworker-xlarge/DOCSP-26985-uuid-object/sdk/react-native/realm-database/schemas/uuid/) ### Reminder Checklist If your PR modifies the docs, you might need to also update some corresponding pages. Check if completed or N/A. - [N/A] Create Jira ticket for corresponding docs-app-services update(s), if any - [N/A] Checked/updated Admin API - [N/A] Checked/updated CLI reference ### Review Guidelines [REVIEWING.md](https://github.com/mongodb/docs-realm/blob/master/REVIEWING.md) Co-authored-by: Mohammad Hunan Chughtai <[email protected]>
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‎examples/react-native/__tests__/js/models/Profile.js‎

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import Realm from 'realm';
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// :snippet-start: js-profile-schema
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class Profile extends Realm.Object {
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static schema = {
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name: 'Profile',
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primaryKey: '_id',
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properties: {
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_id: 'uuid',
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name: 'string',
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},
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};
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}
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// :snippet-end:
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export default Profile;

‎examples/react-native/__tests__/js/realm-database/schemas/uuid.test.jsx‎

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import React, {useState} from 'react';
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import {Button, TextInput, View} from 'react-native';
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import {render, fireEvent, waitFor, act} from '@testing-library/react-native';
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import Realm from 'realm';
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import {createRealmContext} from '@realm/react';
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import Profile from '../../models/Profile';
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const realmConfig = {
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schema: [Profile],
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deleteRealmIfMigrationNeeded: true,
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};
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const {RealmProvider, useRealm} = createRealmContext(realmConfig);
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let assertionRealm;
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// test describe block for the uuid schema
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describe('uuid schema', () => {
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beforeEach(async () => {
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// we will use this Realm for assertions to access Realm Objects outside of a Functional Component (like required by @realm/react)
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assertionRealm = await Realm.open(realmConfig);
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// delete every object in the realmConfig in the Realm to make test idempotent
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assertionRealm.write(() => {
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assertionRealm.delete(assertionRealm.objects(Profile));
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new Profile(assertionRealm, {
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name: 'Tony Stark',
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_id: new Realm.BSON.UUID(),
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});
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});
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});
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afterAll(() => {
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if (!assertionRealm.isClosed) {
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assertionRealm.close();
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}
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});
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it('should be able to create a new uuid', async () => {
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// :snippet-start: create-uuid-object
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// :replace-start: {
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// "terms": {
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// " testID='nameInput'": "",
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// " testID='createProfileButton'": ""
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// }
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// }
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const CreateProfileInput = () => {
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const realm = useRealm();
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const [name, setName] = useState('');
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// createProfile creates a new 'Profile' Realm Object with a new UUID based on user input
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const createProfile = () => {
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realm.write(() => {
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new Profile(realm, {
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name,
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_id: new Realm.BSON.UUID(),
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});
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});
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};
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return (
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<View>
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<TextInput testID='nameInput' placeholder='Name' onChangeText={setName} />
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<Button testID='createProfileButton' title='Create Profile' onPress={createProfile} />
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</View>
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);
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// :replace-end:
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// :snippet-end:
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};
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const App = () => (
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<RealmProvider>
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<CreateProfileInput />
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</RealmProvider>
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);
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const {getByTestId} = render(<App />);
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// Test that the createProfileButton's onPress method creates a new Profile Object with a new UUID
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const nameInput = await waitFor(() => getByTestId('nameInput'), {
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timeout: 5000,
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});
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const createProfileButton = await waitFor(() => getByTestId('createProfileButton'), {timeout: 5000});
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await act(() => {
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fireEvent.changeText(nameInput, 'Steve Rogers');
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});
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await act(() => {
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fireEvent.press(createProfileButton);
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});
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// Test that the Profile Object with the new UUID was created using the assertionRealm and that the name is correct
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const profiles = assertionRealm.objects(Profile);
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expect(profiles.length).toBe(2);
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expect(profiles[1].name).toBe('Steve Rogers');
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});
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});

‎examples/react-native/__tests__/ts/models/Profile.ts‎

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import Realm from 'realm';
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// TODO: Replace `static schema` with TS-first models + realm-babel-plugin (https://www.npmjs.com/package/@realm/babel-plugin) approach once realm-babel-plugin version 0.1.2 releases with bug fixes
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// :snippet-start: ts-profile-schema
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class Profile extends Realm.Object<Profile> {
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_id!: Realm.BSON.UUID;
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name!: string;
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static schema = {
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name: 'Profile',
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primaryKey: '_id',
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properties: {
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_id: 'uuid',
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name: 'string',
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},
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};
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}
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// :snippet-end:
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export default Profile;

‎examples/react-native/__tests__/ts/realm-database/schemas/uuid.test.tsx‎

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import React, {useState} from 'react';
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import {Button, TextInput, View} from 'react-native';
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import {render, fireEvent, waitFor, act} from '@testing-library/react-native';
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import Realm from 'realm';
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import {createRealmContext} from '@realm/react';
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import Profile from '../../models/Profile';
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const realmConfig = {
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schema: [Profile],
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deleteRealmIfMigrationNeeded: true,
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};
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const {RealmProvider, useRealm} = createRealmContext(realmConfig);
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let assertionRealm: Realm;
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// test describe block for the uuid schema
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describe('uuid schema', () => {
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beforeEach(async () => {
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// we will use this Realm for assertions to access Realm Objects outside of a Functional Component (like required by @realm/react)
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assertionRealm = await Realm.open(realmConfig);
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// delete every object in the realmConfig in the Realm to make test idempotent
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assertionRealm.write(() => {
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assertionRealm.delete(assertionRealm.objects(Profile));
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new Profile(assertionRealm, {
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name: 'Tony Stark',
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_id: new Realm.BSON.UUID(),
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});
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});
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});
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afterAll(() => {
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if (!assertionRealm.isClosed) {
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assertionRealm.close();
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}
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});
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it('should be able to create a new uuid', async () => {
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// :snippet-start: create-uuid-object
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// :replace-start: {
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// "terms": {
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// " testID='nameInput'": "",
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// " testID='createProfileButton'": ""
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// }
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// }
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const CreateProfileInput = () => {
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const realm = useRealm();
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const [name, setName] = useState('');
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// createProfile creates a new 'Profile' Realm Object with a new UUID based on user input
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const createProfile = () => {
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realm.write(() => {
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new Profile(realm, {
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name,
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_id: new Realm.BSON.UUID(),
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});
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});
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};
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return (
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<View>
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<TextInput testID='nameInput' placeholder='Name' onChangeText={setName} />
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<Button testID='createProfileButton' title='Create Profile' onPress={createProfile} />
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</View>
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);
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// :replace-end:
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// :snippet-end:
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};
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const App = () => (
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<RealmProvider>
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<CreateProfileInput />
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</RealmProvider>
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);
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const {getByTestId} = render(<App />);
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// Test that the createProfileButton's onPress method creates a new Profile Object with a new UUID
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const nameInput = await waitFor(() => getByTestId('nameInput'), {
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timeout: 5000,
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});
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const createProfileButton = await waitFor(() => getByTestId('createProfileButton'), {timeout: 5000});
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await act(() => {
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fireEvent.changeText(nameInput, 'Steve Rogers');
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});
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await act(() => {
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fireEvent.press(createProfileButton);
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});
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// Test that the Profile Object with the new UUID was created using the assertionRealm and that the name is correct
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const profiles = assertionRealm.objects(Profile);
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expect(profiles.length).toBe(2);
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expect(profiles[1].name).toBe('Steve Rogers');
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});
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});

‎source/examples/generated/react-native/js/Profile.snippet.js-profile-schema.js‎

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class Profile extends Realm.Object {
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static schema = {
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name: 'Profile',
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primaryKey: '_id',
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properties: {
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_id: 'uuid',
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name: 'string',
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},
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};
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}

‎source/examples/generated/react-native/js/uuid.test.snippet.create-uuid-object.jsx‎

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const CreateProfileInput = () => {
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const realm = useRealm();
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const [name, setName] = useState('');
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// createProfile creates a new 'Profile' Realm Object with a new UUID based on user input
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const createProfile = () => {
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realm.write(() => {
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new Profile(realm, {
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name,
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_id: new Realm.BSON.UUID(),
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});
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});
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};
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return (
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<View>
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<TextInput placeholder='Name' onChangeText={setName} />
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<Button title='Create Profile' onPress={createProfile} />
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</View>
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);

‎source/examples/generated/react-native/ts/Profile.snippet.ts-profile-schema.ts‎

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class Profile extends Realm.Object<Profile> {
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_id!: Realm.BSON.UUID;
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name!: string;
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static schema = {
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name: 'Profile',
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primaryKey: '_id',
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properties: {
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_id: 'uuid',
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name: 'string',
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},
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};
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}

‎source/examples/generated/react-native/ts/uuid.test.snippet.create-uuid-object.tsx‎

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const CreateProfileInput = () => {
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const realm = useRealm();
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const [name, setName] = useState('');
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// createProfile creates a new 'Profile' Realm Object with a new UUID based on user input
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const createProfile = () => {
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realm.write(() => {
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new Profile(realm, {
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name,
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_id: new Realm.BSON.UUID(),
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});
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});
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};
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return (
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<View>
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<TextInput placeholder='Name' onChangeText={setName} />
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<Button title='Create Profile' onPress={createProfile} />
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</View>
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);

‎source/sdk/react-native/realm-database/schemas/uuid.txt‎

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``UUID`` (Universal Unique Identifier) is a 16-byte :wikipedia:`unique value
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<Universally_unique_identifier>`. You can use ``UUID`` as an identifier for
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objects. ``UUID`` is :ref:`indexable <react-native-indexes>` and you can use it as a
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objects. ``UUID`` is :ref:`indexable <react-native-indexes>`, and you can use it as a
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:ref:`primary key <react-native-primary-keys>`.
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.. include:: /includes/note-using-uuid-instead-of-objectid.rst
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.. tabs-realm-languages::
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.. tab::
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:tabid: typescript
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.. literalinclude:: /examples/generated/react-native/ts/Profile.snippet.ts-profile-schema.ts
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:language: typescript
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.. tab::
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:tabid: javascript
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.. literalinclude:: /examples/generated/react-native/js/Profile.snippet.js-profile-schema.js
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:language: javascript
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Usage
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-----
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To define a property as a ``UUID``, set its type to the string ``"uuid"`` in
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your :ref:`object model <react-native-object-schemas>`. Create a Realm
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object within a write transaction. To set any unique identifier properties of
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your object to a random value, call ``new UUID()``. Alternatively, pass a string
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to ``new UUID()`` to set the unique identifier property to a specific value.
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.. literalinclude:: /examples/generated/node/data-types.snippet.work-with-uuid.js
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:language: javascript
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To define a property as a ``UUID``, set its type to ``"uuid"`` in your
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:ref:`object model <react-native-object-schemas>`. Create a Realm object within
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a write transaction. To set any unique identifier properties of your object to a
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random value, call ``new UUID()``. Alternatively, pass a string to ``new
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UUID()`` to set the unique identifier property to a specific value.
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Example
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~~~~~~~
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In the following ``CreateProfileInput`` example, we create a ``Profile``
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:js-sdk:`Realm.Object <Realm.Object.html>` with a ``uuid`` type for the ``_id``
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field.
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The ``CreateProfileInput`` component does the following:
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- Gets access to the opened realm instance by calling the ``useRealm()`` hook.
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- Creates a name `state variable <https://reactjs.org/docs/hooks-state.html>`__ called "name" that represents the name of the profile.
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- Creates a ``createProfile`` method that performs a write transaction. Within that write transaction, we :ref:`create <react-native-create-a-new-object>` a ``Profile`` object with the ``name`` value of the "name" state variable and an ``_id`` value of a new ``UUID`` object.
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- Renders a ``TextInput`` component that allows the user to enter a name for the profile. When the user presses the "Create Profile" button, the ``createProfile`` method is called and creates a ``Profile`` object.
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.. tabs-realm-languages::
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.. tab::
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:tabid: typescript
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.. literalinclude:: /examples/generated/react-native/ts/uuid.test.snippet.create-uuid-object.tsx
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:language: typescript
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:emphasize-lines: 2, 7-12
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:linenos:
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.. tab::
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:tabid: javascript
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.. literalinclude:: /examples/generated/react-native/js/uuid.test.snippet.create-uuid-object.jsx
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:language: javascript
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:emphasize-lines: 2, 7-12
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:linenos:

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