Reacting to Appwrite events in a React Native environment

Question

Reacting to Appwrite events in a React Native environment

My React Native application encounters an error when subscribing to realtime events. The error message reads as follows:

ERROR Error: URLSearchParams.set is not implemented, js engine: hermes.

appwriteClient
      .subscribe(
 `databases.${APPWRITE_DATABASE_ID}.collections.${APPWRITE_OPPORTUNITIES_COLLECTION_ID}.documents`,
        (response: any) => {
          if (response.events.includes(
            'databases.*.collections.*.documents.*.create'
          )) {
            setOpportunities((prevOpportunities: any[]) => {
              const updatedOpportunity = [...prevOpportunities, ...response.payload];
              return updatedOpportunity;
            })
          } else if (response.events.includes(
            'database.*.collections.*.documents.delete'
          )) {
            setOpportunities((prevOpportunities: any[]) => {
              return prevOpportunities.filter((opportunity) => {
                return opportunity.$id !== response.payload.$id
              })
            })
          }
        })

I am seeking a solution to effectively monitor changes in the opportunity collection and promptly update my state upon reflection of updates or creations. How can I efficiently manage appwrite event subscriptions to resolve the URLSearchParams error?

typescript react-native appwrite

Answer 1

Answer №1

At times, React Native may not come with certain features that are typically found in a standard web environment. To address this, one common solution is to incorporate a polyfill. An option could be utilizing core-js as discussed here.

To implement this, add the following lines early in your app (index.ts or App.tsx)
import 'core-js/actual/url';
import 'core-js/actual/url-search-params';

Alternatively, another recommendation is to consider using react-native-url-polyfill and import it at the foundation of your React Native project:

import 'react-native-url-polyfill/auto';

Answer 2

At times, React Native may not come with certain features that are typically found in a standard web environment. To address this, one common solution is to incorporate a polyfill. An option could be utilizing core-js as discussed here.

To implement this, add the following lines early in your app (index.ts or App.tsx)
import 'core-js/actual/url';
import 'core-js/actual/url-search-params';

Alternatively, another recommendation is to consider using react-native-url-polyfill and import it at the foundation of your React Native project:

import 'react-native-url-polyfill/auto';

Answer 3

Answer №2

If you're looking to manage Appwrite event subscriptions within a React Native environment, the recommended approach is to leverage the WebSocket SDK provided by Appwrite. Below is an illustration of how you can establish event subscriptions:

Start off by ensuring that you have installed the Appwrite JavaScript SDK in your React Native project:

 npm install appwrite

Subsequently, proceed to create a WebSocket connection for subscribing to events in your React Native application:

import React, { useEffect } from 'react';
import { Client } from 'appwrite';

const App = () => {
  useEffect(() => {
    const client = new Client(); // Initialize your Appwrite Client

    // Modify 'YOUR_ENDPOINT' and 'YOUR_PROJECT_ID' with your specific Appwrite credentials
    client
      .setEndpoint('YOUR_ENDPOINT') // Your Appwrite endpoint
      .setProject('YOUR_PROJECT_ID'); // Your Appwrite project ID

    // Establish a WebSocket connection
    const socket = new WebSocket(client.subscribe(['events']));

    // Listen for WebSocket connection establishment
    socket.onopen = () => {
      console.log('WebSocket connection established.');
    };

    // Receive and handle WebSocket messages
    socket.onmessage = event => {
      const eventData = JSON.parse(event.data);
      console.log('Received event:', eventData);
      // Implement logic to handle the received event data
    };

    // Handle WebSocket errors
    socket.onerror = error => {
      console.error('WebSocket error:', error);
    };

    // Clean up WebSocket connection on component unmount
    return () => {
      socket.close();
    };
  }, []); // Execute this effect only once upon component mounting

  return (
    // Incorporate your desired React Native UI components here
    // ...
  );
};

export default App;

This demonstration showcases the setup of a fundamental WebSocket connection utilizing the Appwrite JavaScript SDK within a React Native functional component. Remember to substitute 'YOUR_ENDPOINT' and 'YOUR_PROJECT_ID' with your pertinent Appwrite API endpoint and project ID.

The provided code initiates a WebSocket connection to subscribe to the 'events' channel. If needed, you can either amend the channel name or incorporate multiple channels to subscribe to varied events.

In the socket.onmessage callback, ensure to tailor the handling of received event data based on your application's specific requirements.

Answer 4

If you're looking to manage Appwrite event subscriptions within a React Native environment, the recommended approach is to leverage the WebSocket SDK provided by Appwrite. Below is an illustration of how you can establish event subscriptions:

Start off by ensuring that you have installed the Appwrite JavaScript SDK in your React Native project:

 npm install appwrite

Subsequently, proceed to create a WebSocket connection for subscribing to events in your React Native application:

import React, { useEffect } from 'react';
import { Client } from 'appwrite';

const App = () => {
  useEffect(() => {
    const client = new Client(); // Initialize your Appwrite Client

    // Modify 'YOUR_ENDPOINT' and 'YOUR_PROJECT_ID' with your specific Appwrite credentials
    client
      .setEndpoint('YOUR_ENDPOINT') // Your Appwrite endpoint
      .setProject('YOUR_PROJECT_ID'); // Your Appwrite project ID

    // Establish a WebSocket connection
    const socket = new WebSocket(client.subscribe(['events']));

    // Listen for WebSocket connection establishment
    socket.onopen = () => {
      console.log('WebSocket connection established.');
    };

    // Receive and handle WebSocket messages
    socket.onmessage = event => {
      const eventData = JSON.parse(event.data);
      console.log('Received event:', eventData);
      // Implement logic to handle the received event data
    };

    // Handle WebSocket errors
    socket.onerror = error => {
      console.error('WebSocket error:', error);
    };

    // Clean up WebSocket connection on component unmount
    return () => {
      socket.close();
    };
  }, []); // Execute this effect only once upon component mounting

  return (
    // Incorporate your desired React Native UI components here
    // ...
  );
};

export default App;

This demonstration showcases the setup of a fundamental WebSocket connection utilizing the Appwrite JavaScript SDK within a React Native functional component. Remember to substitute 'YOUR_ENDPOINT' and 'YOUR_PROJECT_ID' with your pertinent Appwrite API endpoint and project ID.

The provided code initiates a WebSocket connection to subscribe to the 'events' channel. If needed, you can either amend the channel name or incorporate multiple channels to subscribe to varied events.

In the socket.onmessage callback, ensure to tailor the handling of received event data based on your application's specific requirements.

Reacting to Appwrite events in a React Native environment

Answer №1

Answer №2

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