react-native-trello-login

A component that encapsulates Trello's API token-based authentication to grant third-party applications access to the Trello API.

Setup

This library is available on npm, install it with: npm install --save react-native-trello-login or yarn add react-native-trello-login.

Usage

1. Import react-native-trello-login

import TrelloLogin from "react-native-trello-login";

2. Define your Trello API key

To begin the authentication process, you need an API key. Every Trello user is given an API key. You can retrieve your API key by logging into Trello and visiting https://trello.com/app-key/.
Because the API key is tied to the user, it is often a good idea to create a Trello user specifically for building a single application or integration. This ensures that a third-party's integration is disassociated from a third-party integration's developer's Trello account. It's also suggested to define the API key in a separate file or in an environment variable.

const TRELLO_API_KEY = "YOUR_API_KEY_HERE";

3. Show the Trello authentication screen

The imported TrelloLogin component is just a React-Native WebView that will take care of showing and handling the Trello auth process.

export default class TrelloLoginExample extends React.Component {
  handleLoginSuccess = trelloAuthToken => {
    // The user authenticated successfully.
    // From now on you'll be able to use the Trello APIs using `trelloAuthToken`
  };
 
  handleLoginFailure = message => {
    // Handle the authentication failure (maybe by showing an alert?)
  };
 
  render() {
    return (
      <View style={styles.container}>
        <TrelloLogin
          applicationName="React Native Trello Login Example"
          onLoginSuccess={this.handleLoginSuccess}
          onLoginFailure={this.handleLoginFailure}
          trelloApiKey={TRELLO_API_KEY}
          style={styles.webview}
        />
      </View>
    );
  }
}

A complete example

See the /example folder for a complete example (login + logout).

Available props

Name	Type	Default	Description
applicationName	string	REQUIRED	The application name shown to the user in the login process
debugEnabled	bool	false	When true, shows a few useful console.debug logs during the login process
onLoginFailure	func	REQUIRED	Callback invoked on a failed login (callback parameter: error message)
onLoginSuccess	func	REQUIRED	Callback invoked on a successful login (callback parameter: auth token)
trelloApiKey	string	REQUIRED	The Trello API key
style	any	null	Style applied to the Trello login WebView

Please notice that you can also provide any WebView prop.

Useful resources

• Trello auth docs
• Trello API docs
• Your Trello API key
• React-Native WebView docs